Hartmann, Hudson T.. Plant propagation : principles and practices / Hudson T. Hartmann... et al. . - 4th / . - New Delhi : Prentice Hall of India , 1989. - xi,770p. : Ills. ; 27cm . NULL ISBN: 8120312333 NULL Subjects--Index Terms: PLANT PROPAGATION Dewey Class. No.: 631.53 / HAR/P