@book{12120,
	author = {Hammons, Donald R.},
	title = {Hog slaughtering and dressing systems},
	publisher = {U.S. Dept. of Agriculture, Agricultural Research Service; [for sale by Supt. of Docs., U.S. Govt. Print. Off.,},
	year = {1966]},
	series = {Marketing research report no. 755},
	address = {Washington]}
}