Schreiner, Oswald, 1875- Certain organic constituents of soils in relation to soil fertility. By Oswald Schreiner and Howard S. Reed, assisted by J.J. Skinner. - Washington, Govt. print. off., 1907. - 52 p. VI pl. 23 cm. LCCN: agr07002233 Subjects--Topical Terms: Soils--Analysis. LC Class. No.: S591 / .A12 no. 47