@book{98054,
	author = {Robbins, Wilfred William and Ramaley, Francis},
	title = {Plants useful to man},
	publisher = {P. Blakiston's son & co., inc.},
	year = {[c1933]},
	address = {Philadelphia},
	note = {About half the material is adapted from Robbins' "Botany of crop plants". cf. Pref.}
}