Richard Sadler. (1973). Reproduction of vertebrates. Academic press.
Dyfyniad Arddull ChicagoRichard Sadler. Reproduction of Vertebrates. Academic press, 1973.
Dyfyniad MLARichard Sadler. Reproduction of Vertebrates. Academic press, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.