Died. Max Yasgur, 53, upstate New York dairy farmer who, when original plans for a 1969 weekend rock concert went awry because of local regulations, became the patron saint of the counterculture when he opened his 600-acre farm to more than 300,000 uninhibited, youthful celebrators of the Woodstock festival; of an apparent heart attack; in Marathon, Fla.

Died. Joseph Ehrenreich, 65, promotion-wise president of Ehrenreich Photo-Optical Industries, Inc., whose 1954 trade agreement with the Japanese firm of Nippon Kogaku established Ehrenreich as the sole U.S. importer of 35-mm. Nikon cameras (now $43 million in U.S. sales) and helped open the American market to Japanese optical and scientific equipment; of an apparent heart attack; in Los Angeles.

Died. John H. Gibbon Jr., 69, the cardiac surgeon who developed the first heart-lung machine successfully used on a human patient; of an apparent heart attack while playing tennis; in Philadelphia. Gibbon spent 19 years perfecting the device that could take over heart and lung functions during heart surgery. In its first application to a human in 1953, the device worked perfectly for 26 minutes, permitting Gibbon to repair a hole in the heart of an 18-year-old girl. She survived, and Gibbon's achievement opened the way to a variety of heart operations, including transplants. An improved version of his machine is still standard equipment in open-heart surgery.

Died. Robert M. Coates, 75, short-story writer and art critic for The New Yorker for three decades (1937-67), and author of surrealistic fiction (The Eater of Darkness) who also launched a famous literary friendship in Paris when he introduced his onetime boxing partner, Ernest Hemingway, to Gertrude Stein; in Manhattan.

Died. Andy Razaf, 77, lyricist whose hits included Honeysuckle Rose, Ain't Misbehavin', Stompin' at the Savoy and Milkman's Matinee; in Los Angeles. The son of a Madagascan nobleman, Razaf (real name: Andrea Paul Razafkeriefo) was born in Washington, D.C., after his father had been killed and his mother had fled during a French invasion of Madagascar in 1895. He wrote more than 1,000 songs during the '20s and '30s and in 1972 was elected to the Songwriters Hall of Fame.

Died. Alexander Biddle, 79, who in the '40s and '50s guided the consolidation of the Philadelphia, Baltimore and Washington stock exchanges, then served as the new organization's president (1964-65); in Bryn Mawr, Pa.

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