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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Invertebrates > Insects (entomology)
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Phylogenetic Relationships within Heliodinidae and Systematics of Moths Formerly Assigned to Heliodines Stainton (Lepidoptera: Yponomeutoidea) (Paperback, New)
Loot Price: R1,970
Discovery Miles 19 700
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Phylogenetic Relationships within Heliodinidae and Systematics of Moths Formerly Assigned to Heliodines Stainton (Lepidoptera: Yponomeutoidea) (Paperback, New)
Series: UC Publications in Entomology, 124
Expected to ship within 10 - 15 working days
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A practical pocket-sized guide to the identification and use of
precious and semiprecious stones, novelty stones, agates and
crystals. The introductory part of the book describes the geology,
chemistry and properties of gemstones in clear and accessible
terms. The important properties of gemstones are explained,
including crystal structures and optical and physical properties,
and the book also examines synthetic gems and discusses how to tell
them apart from natural stones. It then covers practical aspects of
gemmology and the use of stones, including fashioning and cutting,
types and shapes of cut, collecting, handling and storing
gemstones, and weighing and measuring stones.
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