Crist, Darlene Trew. frey50 World ocean census : a global survey of marine life / Darlene Trew Crist, Gail Scowcroft and James M. Harding. - Richmond Hill, Ont. : Firefly Books, 2009. - 256 p. ISBN: 9781554074341 1554074347 Subjects--Corporate Names: Census of Marine Life (Program) Subjects--Topical Terms: Marine animals--Counting--Methodology.Marine biology--Research--Methodology.Zoological surveys--Methodology.Marine ecology.Oceanography. Dewey Class. No.: 578.77 Cri 11