author = { Russert-Kraemer, Louise AND Bock, Walter J. },

title = { Prologue: The Necessity of the Organism },

publisher = {American Society of Zoologists},

isbn = {0003-1569},

keywords = { Is the Organism Necessary? },

year = {1989},

url = { http://slubdd.de/katalog?TN_libero_mab2 }