00279nam a2200109Ia 4500008004100000020001800041082001500059100001600074245002800090260004200118300000900160190710s9999    xx            000 0 und d  a81-85842-81-1  a363.7 Sh23  aSharma, B K 0aEnvironmental chemistry  aMeerutbKrishna Prakashan Mediac2003  a1300