00283nam a2200121Ia 45000030006000000080041000060400015000471000017000622450037000792600016001165460012001320050017001440STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPandey, G.N.  aText book of chemical technology  bVikasc1994  aEnglish20220125170259.0