00289nam a2200109Ia 450000500170000000800410001708200140005810000180007224500320009026000490012230000080017120260224040759.0260224s9999||||xx |||||||||||||| ||und||  a660.6 KUM  aKumar, H.D.   2aA textbook on biotechnology  aNew Delhi:. Affiliated East West Pressc2003  a639