@book{21121,
	author = {Terrell, Edward E. and Peterson, Paul M.},
	title = {Caryopsis morphology and classification in the Triticeae (Pooideae : Poaceae)},
	publisher = {Smithsonian Institution,},
	year = {1993},
	series = {Smithsonian contributions to botany},
	address = {Washington :}
}