Maynard, John T., Understanding chemical patents: Maynard, John T., - Washington, DC American Chemical Society, 1991 - xvi, 183 p. : ISBN: 0841219974 (alk. p;ISBN0841219982 (pbk. : alk. paper) Subjects--Topical Terms: Chemistry; Patents. LC Class. No.: T211;T211 / .M39 1991;.M39 1991