Pruning Field Grown Shade and Flowering Trees. By T. E. Bilderback, R.E. Bir and M.A. Powell. Horticultural Information Leaflet NO. 406. Available from local County Extension Centers.
The North Carolina Agricultural Chemicals Manual. College. of Ag. and Life Sci., NCSU. Order from NCSU Publications Office, Box 7603, Raleigh, N.C. 27695-7603
The American Standards for Nursery Stock. ANSI 60.1. American Association of Nurserymen. 1250 I Street N.W. Suite 500, Washington D.C. 20005. Single copies are $10.00 plus $2.50 for shipping and handling.
Weed Control Suggestions for Christmas Trees, Woody Ornamentals, and Flowers; Bulletin AG 427. North Carolina Cooperative Extension Service. Department of Horticultural Science Extension, NCSU, Raleigh, N.C. 27695-7609. pp. 72. Single copies are $7.00.