@book{21394,
	author = {Hawksworth, Frank G. and Wiens, Delbert,},
	title = {Biology and classification of dwarf mistletoes (Arceuthobium)},
	publisher = {U.S. Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.},
	year = {1972.},
	series = {Agriculture handbook no. 401},
	address = {Washington}
}