By Hartmann, Hudson T.. New Jersey: Prentice Hall 1983 . 727 p.: 24 cm..
New Jersey Prentice Hall 2002 . 880 p. 29 cm. 0136792359
New Jersey Prentice Hall 1997 . xi, 770 p. 27 cm. 0132061031
By Herman, Edwin B.. Mohegan Lake (New York) Agritech Consultants 2002 . 141 p. 30 cm.