Patra, Gopal Chandra . Studies on synthesis and transformations of nitrogen and sulfur-containing heterocycles / researched by Gopal Chandra Patra; guided by S Pal. - Midnapore : Vidyasagar University , 2013. - ix ,129p. 10 : tables ; 30cm Document represent Ph.D Thesis Subjects--Index Terms: HETEROCYCLIC CHEMISTRY HETEROCYCLIC COMPOUNDS Dewey Class. No.: 547.593 / PAT/S