Aphids are tempting subjects for investigation because they are often abundant, easily found, and unlikely to run away, and because of intriguing facts about their biology such as polyphenism, parthenogenesis, gall formation, and the production of a soldier morph. However, until now identification has presented a severe challenge to the beginner, because there are so many rather similar species, many of which have several different forms. The authors make this much-needed Naturalists' Handbook accessible by confining themselves to aphids living on broad-leaved trees. This has reduced the problems of identification to manageable proportions and should encourage more field studies of this important and ubiquitous group of insects. This is a digital reprint (without updates) of ISBN 9780855463144 (2007).

Aimed at consultant colorectal surgeons and those in training who wish to expand their practice into pelvic floor pathology- a complex and developing area of surgery- Pelvic Floor Disorders for the Colorectal Surgeon provides a modern, thought-provoking approach to pelvic floor disorders written by emerging young leaders in the field. These conditions are of high importance and interest to colorectal surgeons, but also gynaecologists, gastroenterologists and general gastrointestinal surgeons.
The layout of the text book is in 3 sections. The first provides an organizational and diagnostic approach to pelvic floor problems that is conceptual in scope, the second details the patho-anatomical and physiological entities that this diagnostic approach will bring to light and describes their management, while the third is more technical, covering key new diagnostic and therapeutic procedures and their results. The textbook aims to encourage the reader to critically analyze some of their own cherished views, and those more widely established, on colorectal pelvic floor practice.