@article {1555,
	title = {Vivipary, proliferation and phyllody in grasses},
	journal = {Journal of Range Management},
	volume = {33},
	year = {1980},
	pages = {256-261},
	keywords = {CR REF, Grasses, VIVIPARY},
	author = {Beetle, A. A.}
}
@article {1553,
	title = {Evolution of the Grasses},
	journal = {Wyoming Range Management},
	volume = {110},
	year = {1957},
	pages = {1-3},
	keywords = {EVOLUTION, Grasses},
	author = {Beetle, A. A.}
}
@article {1554,
	title = {Distribution as a key to the age and origin of grasses},
	journal = {University of Wyoming Publications},
	volume = {24},
	year = {1960},
	pages = {1-8},
	keywords = {CLIFFORD REPRINT, DISTRIBUTION, Grasses},
	author = {Beetle, A. A.}
}
