00793cam a22002291 4500 agr13000003 DLC 20260227110935.0 940205s1912 dcuf 000 0 eng c agr13000003 (OCoLC)29756971 Library, U.S. Dept. of Agriculture CU CU DLC S591 .A12 no. 90 S593 .S482 Schreiner, Oswald, 1875- Occurrence and nature of carbonized material in soils. By Oswald Schreiner ... and B.E. Brown ... Washington, Govt. print. off., 1912. 28 p. VII pl. on 4 l. 23 cm. United States. Bureau of Soils. Bulletin no. 90 Soils Analysis. Brown, B. E. (Bailey Edgar), 1879-1951, jt. author. 8175 8175