@book{50443,
	author = {Kumar, Joginder. and Davis, Kingsley},
	title = {Population and land in world agriculture},
	publisher = {Institute of International Studies, University of California},
	year = {[1973]},
	series = {Population monograph series},
	address = {Berkeley},
	note = {"Companion study to the two-volume work, World urbanization, 1950-1970", by D. Kingsley.}
}