@book{60809,
	author = {Mitchell, John William. and Livingston, George A. and E.U.A. Department of Agriculture.},
	title = {Methods of studyng plant hormones and growth-regulating substances},
	publisher = {USDA. Agricultural Research Service,},
	year = {1968},
	series = {USDA. Agriculture handbook},
	address = {Washington :}
}