Efecto del CIDR (Controlled Internal Drug Release) aplicado después de la inseminación artificial sobre la tasa de preñez en vacas de carne.

Tesis (Maestro en Ciencias Veterinarias) UANL, 2009.

Six months residence and rravels in México ; containing remarks onthe present state of New Spain, its natural productions, state of society, manufactures, trade, agriculture and antiquities

UANL

México its trade, industries and resources

UANL

United States and México : commerce, trade, and postal facilities between tha two countries

UANL