@book{66148,
	author = {Nieuwkoop, Pieter D. and Sutasurya, Lien A.},
	title = {Primordial germ cells in the invertebrates :},
	publisher = {Cambridge University Press,},
	year = {1981.},
	series = {Developmental and cell biology series ;},
	address = {New York :},
	note = {Includes index.}
}