* Paul D. Zimmerman, 54, a journalist and screenwriter, died of colon cancer March 2 at the Medical Center at Princeton, N.J. He won a British Academy Award for his screenplay for "The King of Comedy," a 1983 film directed by Martin Scorsese. He contributed to several other films and television programs, including "Lovers and Liars," "Consuming Passions" and "Sesame Street." Early in his career, he was on the staff of Newsweek magazine. Mr. Zimmerman's books included two collaborations with Dick Schaap -- "The Year the Mets Lost Last Place" and "The Open Man," a diary kept by the New York Knicks player Dave DeBusschere -- and "The Marx Brothers at the Movies," which he wrote with Burt Goldblatt. * Jose F. Duval, 72, an actor and singer, died of heart failure Feb. 27 at Brotman Memorial Hospital in Culver City, Calif. The Los Angeles resident was a familiar face to television viewers as the original coffee planter Juan Valdez in commercials for Colombian coffee. His picture also appeared on coffee cans and in print ads for 10 years. The Havana native, who came to the United States at the age of 20 under the sponsorship of the Metropolitan Opera baritone and Broadway star Robert Weede, began his career as an opera singer, appearing in a Met touring production of "Die Fledermaus," and moved into musical theater and film. * Robert S. Enright, 46, a leading tax lawyer and senior executive of Pepsico Inc., died Wednesday after a swimming accident off a beach near Brisbane, Queensland, during a business trip to Australia. * Robert de Liban, 74, an engineer on the Manhattan Project and a pioneer in developing automated guidance systems, died Feb. 28 of complications following surgery in Stanford, Calif. He spent most of the war at Oak Ridge, Tenn., working on the project that led to the atomic bomb. * Izaak M. Kolthoff, 99, a chemist whose research on synthetic rubber helped the Allied war effort during World War II, died Thursday in St. Paul, Minn. He developed a process for making synthetic rubber at low temperatures, making large-scale production easier at a time when the war had cut off supplies of natural rubber. In the 1950s, he was an outspoken critic of Sen. Joseph McCarthy's anti-Communist purges, and in 1961 he launched a campaign of scientists opposed to nuclear weapons testing. * Jerry Lisker, 54, executive sports editor of the Fox TV network, died Thursday morning of brain cancer at his home in North Babylon, N.Y. * Claude Charland, 59, Canada's ambassador to France, died of cancer Wednesday in Paris.