00314nam a2200109Ia 450000500170000000800410001708200140005810000210007224500570009326000460015030000080019620260225051015.0260224s9999||||xx |||||||||||||| ||und||  a575.1 BUR  aGeorge W. Burns  4aThe science of genetics:An introduction to heredity   aNew York: MacMillan Publishing Co. c1980  a608