Walker, Brian John, 1941- Organophosphorus chemistry / [by] B. J. Walker. - Harmondsworth : Penguin, 1972. - 278 p. : ill. ; 21 cm. - Penguin library of physical sciences. Chemistry Penguin education . Includes bibliographical references p. (252-268 ) and index ISBN: 0140806474 LCCN: 73-151866 Subjects--Topical Terms: Organophosphorus compounds. Dewey Class. No.: 547/.07