Maynard, Donald N. creator Hochmuth, George J. Knott, James Edward. text us New York Wiley & Sons 1997 1997 4 ed. monographic eng 582 p. /by Donald N. Maynard and George J. Hochmuth Horticultura 635 L6 1997 0471131512 76278 980930 20220329141946.0