@book{12507,
	author = {Krakowski, Martin. and Werboff, Michael,},
	title = {Availability and use of health services;},
	publisher = {Economic Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.,},
	year = {1968]},
	address = {Washington]}
}