Techniques in molecular biology : vol. 2 / edited by John M. Walker and Wim Gaastra. Walker, John M., 1948- ed. Gaastra, Wim. ed. Molecular biology Methodology. Genetic engineering Methodology. QH506 .T4 1983 574.8 19 WAT Includes bibliographical references and index. New York : Macmillan, c1983. c1983. 1983 Text 333 p. : eng