00817cam a22002651 4500 agr24000617 DLC 20260227110944.0 810918s1924 enkab b 000 0 eng c agr24000617 (OCoLC)7770360 U.S. Dept. of Ag. Libr. MnSU DLC premarc S593.5 .C55 Clarke, George Robin. Soil acidity and its relation to the production of nitrate and ammonia in woodland soils, by G. R. Clarke. Oxford, The Clarendon press, 1924. 27 p. illus., map, diagrs. (part fold.) 28 cm. Oxford forestry memoirs, no. 2 Bibliography: p. 6-7. Forest soils. Soil acidity. Nitrates. Ammonia. 8901 8901