00297nam a2200121Ia 45000030006000000080041000060400015000471000049000622450026001112600009001375460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKrishna Pillai, N.; Purushothaman Nair, K.R.  aPreuniversity biology  c1956  aEnglish20220125170415.0