Siddiqui, Anees ahmad Precise chemistry of natural products and heterocyclic compunds for pharmacy and science students - Delhi CBS Publisher 2016 - v, 488 p. : ill. ; 24 cm. Includes index. ISBN: 9788123923758 (pbk) Subjects--Topical Terms: Heterocyclic chemistry--Aromaticity--Energies--Heterocycles--Cyclization--Pyridines--RIPS Dewey Class. No.: 547.59 / SID