Mettler, Lawrence E., 1929- Population genetics and evolution / Lawrence E. Mettler, Thomas G. Gregg. - Englewood Cliffs, N.J. : Prentice-Hall, 1969. - xii, 212 p. : ill. ; 24 cm. Includes bibliographies. ISBN: 136852971o Subjects--Topical Terms: Population genetics.Evolution.