CBS Inc. said it has sold Winston-Seabury Press to Harper & Row Publishers for undisclosed terms . . . The European consortium battling for a stake in Britain's Westland helicopter company reported that it failed in its bid to buy 20.2% of the firm's shares . . . California Biotechnology of Mountain View, Calif., has signed a licensing agreement with Ortho Pharmaceutical regarding possible use of Cal Bio's proprietary nasal spray technology as a delivery system for contraceptive products . . . S&W Fine Foods, a wholly owned subsidiary of Tri/Valley Growers, reported that it has acquired Pik-Nik Foods, a San Jose snack-food manufacturer, for undisclosed terms.