A first-class reference work for the identification of phyto- and zooplankton, and the practical aspects of collection, preservation and analysis of plankton samples. The clear and practical nature of the text and plates makes this work an invaluable companion to the study of this fascinating life style. With the original book unavailable for several years, this book is a facsimile of the 1977, 5th Edition, that has long been regarded as a standard work. With 56 black and white plates, this book makes identification easy and enjoyable. Pisces Conservation are delighted to publish this facsimile print edition, containing the full text and all the original plates & illustrations, with the kind permission of Dr. Richard Newell.