00270nam a2200109Ia 4500008004000000082001500040100001900055245001900074260003900093300001300132650001500145210210b1988   xxu||||| |||| 00| 0 eng d  a575.1 SING  aSINGH (Jagjit)  aGenetics today  aN DelhibNational Book Trustc1988  aviii,229  aGenetics