@book{170232,
	author = {Aguilar Villarreal, Gerardo and  Cadena Villegas, Said, asesor },
	title = {Fertilidad de ovejas sometidas a diferentes protocolos de sincronización de estros  /},
	publisher = {El autor,},
	year = {2017},
	address = {México  :},
	url = {http://10.13.5.2/tesis/sist113577.pdf}
}