00314nam a2200109Ia 4500008004100000040001700041041001200058082001700070100001800087245008800105300001100193230917s9999||||xx |||||||||||||| ||und||  e169267aMAIN  aEnglish  a543.17 J192S  aJakhar, Komal 0aSynthetic studies in heterocyclic compounds containing oxygen, nitrogen and sulphur  a239 p.