@book{25302,
	author = {Briggs, D. (David), 1936 and Walters, S. M.},
	title = {Plant variation and evolution /},
	publisher = {Cambridge University press,},
	year = {1984.},
	address = {Cambridge :},
	edition = {2nd ed.},
	note = {Includes index. Bibliography: p. 366-399.}
}