@book{8120,
	author = {Soria Alatorre, María Félix.},
	title = {Germinabilidad en polen de tejocotes (Crataegus pubescens H.B.K.) del banco de germoplasma en Chapingo, México},
	publisher = {El autor,},
	year = {1992},
	address = {Chapingo, Méx. :}
}