1. 1. RO Greep, and L. Weiss, Histology , 3rd ed . New York: McGraw Hill, 1973 : 195 .
2. 2. WM Copenhaver, RP Bunge, and MB. Bunge, Bailey's textbook of histology , 16th ed . Baltimore: Williams and Wilkins, 1971 : 164 .
3. The Periosteal Control of Long Bone Growth:An Experimental Study in the Rat