Hartmann, Hudson Thomas, 1914- Plant propagation : principles and practices / H. T. Hartmann and Dale E. Kester. - Englewood Cliffs, N. J. : Prentice-Hall, 1968. - 702 p. : ill. ; 23 cm. Includes bibliographical references. Subjects--Topical Terms: Plant propagation. Dewey Class. No.: 631.53