Schofield, Kenneth, 1921- Schofield, Kenneth, 1921- Hetero-aromatic nitrogen compounds : pyrroles and pyridines / [by] K. Schofield. - London : Butterworths, 1967. Includes bibliographical references. LCCN: 67111483 Subjects--Topical Terms: Pyrrole.Pyridine. LC Class. No.: QD401 / .S377