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The problem is that, with the continuing degradation of water and habitat quality, selective harvesting, genetic enhancement programs, and the introduction of hatchery fish into wild populations, the genetic makeup of fish is changing radically. In 27 papers from a workshop held in Moscow, Idaho, an
Takes the reader into the world of the marginalized - the slums, villages and other abandoned spaces in the undeveloped world - and allows their story to be told.
Reprint of the original, first published in 1866.
This book is an exposition of recent progress on the Donaldson–Thomas (DT) theory. The DT invariant was introduced by R. Thomas in 1998 as a virtual counting of stable coherent sheaves on Calabi–Yau 3-folds. Later, it turned out that the DT invariants have many interesting properties and appear in several contexts such as the Gromov–Witten/Donaldson–Thomas conjecture on curve-counting theories, wall-crossing in derived categories with respect to Bridgeland stability conditions, BPS state counting in string theory, and others. Recently, a deeper structure of the moduli spaces of coherent sheaves on Calabi–Yau 3-folds was found through derived algebraic geometry. These moduli spaces ...
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The Gruffalo returns with his very own song to introduce a truly monster music session! As well as being the UK's most successful picture book author, Julia Donaldson is a gifted songwriter for children. The Gruffalo Song and Other Songs contains nine of her best-loved songs, including The Gruffalo, A Squash and a Squeeze and Monkey Puzzle, as well as a number of fun-filled action songs. Brilliantly illustrated throughout by household name and star illustrator, Axel Scheffler, each score includes piano accompaniment and guitar chords. The songs will be familiar to anyone who has heard them on TV or radio or enjoyed one of Julia's hugely popular live performances. Now everyone can sing along!