REFERENCES 191 



Sterrett, W. D., Forest Management of Loblolly Pine in Delaware, Mary- 

 land and Virginia. Bulletin II, United States Department of Agriculture, 

 Washington, 1914, pp. 38-40. 



ijber Nachhaltige Massenentnahmen ohne Flachenverrechnung. Forstwissen- 

 schaftliches Centralblatt, 191 5, pp. 23-26. 



Williamson, A. W. Cottonwood in the Mississippi Valley. Bulletin 24, 

 United States Department of Agriculture, Washington, 1913, pp. 39-42. 



WiMMENAUER. Durchforstungsvcrsuche in Buchen- und Kiefem-bestanden. 

 AUgemeine Forst- und Jagdzeitung, March, 1914, pp. 84-90. 



WooLSEY, T. S., Jr. Strip Thinnings. Proceedings of the Society of Amer- 

 ican Foresters, Vol. 6, 1911, pp. 38-41. 



