TY - BOOK AU - Katritzky,Alan R. AU - Lagowski,J.M. TI - The principles of heterocyclic chemistry SN - 9788188449881 (pbk.) U1 - 547.59 22 PY - 2011/// CY - Hyderabad PB - PharmaMed KW - Heterocyclic chemistry N1 - Includes bibliographical reference and index ER -