Today, our world increasingly is conceived of as being molecular. An ever widening range of phenomena are described logically in terms of molecular properties and molecular interactions. The majority of known molecules are heterocyclic and heterocycles dominate the fields of biochemistry, medicinal chemistry, dyestuffs, photographic science and are of increasing importance in many others, including polymers, adhesives, and molecular engineering. Thus, the importance of heterocyclic chemistry continues to increase and this three volume work by Drs. R. R. Gupta, Mahendra Kumar and Vandana Gupta is a welcome addition to the available guides on the subject. Its scope places it in a useful niche between the single-volume texts and monographs of heterocyclic chemistry and the multivolume treatises. The authors have retained the well tried classical approach but have succeeded in placing their own individual spin on their arrangement. They have put together a well selected range from among the most important of the vast array offacts available. This factual material is ordered in a clear and logical fashion over the three volumes. The present work should be of great value to students-and practitioners of heterocyclic chemistry at all levels from the advanced undergraduate upwards. It will be of particular assistance in presenting a clear and modem view of the subject to those who use heterocycles in a variety of other fields and we wish it well.

This advanced text-cum-reference book presents a comprehensive account of the syntheses, reactions, properties and applications of all the most significant classes of heterocyclic compounds. This second volume in the series is an essential tool not only for advanced undergraduates and graduates, but also for academic and industrial researchers in organic, medicinal, pharmaceutical, dye and agricultural chemistry.

This advanced text-cum-reference book presents a comprehensive account of the syntheses, reactions, properties and applications of all the most significant classes of heterocyclic compounds. This second volume in the series is an essential tool not only for advanced undergraduates and graduates, but also for academic and industrial researchers in organic, medicinal, pharmaceutical, dye and agricultural chemistry.

En trois jours, un ancien soldat de la Force Delta essaie de repousser une attaque devastatrice aux Etats-Unis, tout en protegeant sa famille. En meme temps, il essaie de s'assurer que la justice soit servie. Jean Marshall, un veteran des Operations Speciales devenu travailleur independant, est recueilli par un helicoptere de la DEA au milieu d'une mission de routine en Chine. Des son retour a New York, il trouve des etrangers dans son appartement, et des hommes puissants qui veulent tuer sa famille, mais ce n?est pas tout. Des amis proches de Marshall, l?Equipe Sierra de la Force Delta, suivent bientot leur propre chemin pour arreter une crise globale, alors que la fille de Marshall, Sara, et son petit ami Jacques Laroche essaient de rester en vie et de decouvrir les traitres responsables de cette crise. Pendant trois jours, des loyautes partout seront mises a l'epreuve, de Beijing a Prague a Washington, D.C., et on ne pourra faire confiance qu'aux liens du sang. ---------------------------------------------------------- Over the course of three days, a former Delta Force soldier attempts to thwart a devastating attack on U.S. soil while protecting his family and ensuring that justice is served. Jean Marshall, a Special Forces veteran turned independent contractor, is on a routine assignment in China when he is picked up by a DEA helicopter and his mission is aborted. Upon his return to New York, he finds his home invaded and his family's life in danger, and that's not the extent of his troubles. Marshall's long-time friends and operating partners, Delta Force Team Sierra, are soon following their own path to stop a crisis of global proportions, while Marshall's daughter, Sara, and her boyfriend, Jacques Laroche, fight to stay alive and bring the traitors responsible for the crisis to light. Soon, loyalties all over the world are being tested, from Beijing to Prague to Washington, and the only ties that can be trusted are those that are etched in blood. ----------------------------------------------------------------------- Foreign Language Guidelines (for English-speaking students of French): The novel is written in French, however its constructions are not overly complicated or archaic, and with a good command of the passe simple, and occasional references to the glossary of specialized military terms at the back of the book, a non-native speaker who has completed two to three years of high school French (or equivalent program of study) should be able to read it comfortably.

This 15-volume set includes all Landolt-Boernstein volumes published in 2013. Get them for a special pre-paid standing order price.