author = { Ehrlich, Paul R. AND Ehrlich, Anne H. AND Holdren, John Paul },

title = { Ecoscience population, resources, environment },

publisher = {Freeman},

isbn = {0716700298},

isbn = {0716705672},

keywords = { Population , Pollution , Human ecology , Humanökologie },

year = {1977},

address = { San Francisco },

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