Sedivy, John M. Gene targeting / John M Sedivy, Alexandra L. Joyner. - New York : W.H. Freeman, c1992. - x, 184 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 071677013X Subjects--Topical Terms: Genetic engineering. LC Class. No.: QH442 / S43 1992