Concepts of development / edited by Jay Lash and J. R. Whittaker. Lash, Jay. Whittaker, J. Richard, joint ed. Developmental biology. QH491 .L37 574.3 C744 Includes bibliographical references and index. Stamford, Conn. : Sinauer Associates, 1974. 1974. 1974 Text x, 469 p. : eng