00295nam a2200109Ia 4500008004100000020001800041082001500059100001700074245004100091260003900132300001400171190710s9999    xx            000 0 und d  a81-7133-804-6  a551.6 GA:J  aGoutam, Alka 0aJJalvayu avam samudra vigyan (Hindi)  aMeerutbRastogi Publicationsc2010  aviii, 571