REFERENCES
- Crowther , E. M. 1948 . Rothamsted. Report on 1948 experiments.
- BRITISH FORESTRY COMMISSION . 1949 . Report on forest research 1949
- Hall , A. D. 1945 . “Soil” 5th Ed. (London).
- Robinson , G. W. 1932 . “Soils, Their Origin, Constitution, and Classification.” (London.)
- Schlich , W. 1922 . “Manual of Forestry” Vol. II. (London.) (1895-
- Toumey , U. W. and Korstian , C. F. 1948 . ”Seeding and Planting in the Practice of Forestry.” 3rd Ed. New York : John Wiley & Son .
- Wahlenberg , W. G. 1928 . Investigation in weed control by zinc sulphate at Savenac, U.S.A. . Aust. For. J. , 11 ( 2 ) : 71 – 2 .