DARK-COLORED BANDS IN THE THICK LOESS OF WESTERN IOWA

[1] HANDY RL, 1959, IOWA ACAD SCI, V66, P237

[2] THE FORMS AND REACTIONS OF MANGANESE IN THE SOIL [J]. SOIL SCIENCE, 1947, 63 (02) : 79 - 94

[3] Payne T.G., 1942, AAPG BULL, V26, P1770, DOI 10.1306/3D93356E-16B1-11D7-8645000102C1865D

[4] PEECH M, 1949, 757 US DEP AGR CIRC

[5] RUHE R. V., 1956, Soil Science Society of America. Proceedings, V20, P264

[6] RELATIONS OF THE PROPERTIES OF WISCONSIN LOESS TO TOPOGRAPHY IN WESTERN IOWA [J]. AMERICAN JOURNAL OF SCIENCE, 1954, 252 (11) : 663 - &

[7] RUHE RV, 1954, AM RAILWAY ENG ASS B, V514, P639

[1] HANDY RL, 1959, IOWA ACAD SCI, V66, P237

[2] THE FORMS AND REACTIONS OF MANGANESE IN THE SOIL [J]. SOIL SCIENCE, 1947, 63 (02) : 79 - 94

[3] Payne T.G., 1942, AAPG BULL, V26, P1770, DOI 10.1306/3D93356E-16B1-11D7-8645000102C1865D

[4] PEECH M, 1949, 757 US DEP AGR CIRC

[5] RUHE R. V., 1956, Soil Science Society of America. Proceedings, V20, P264

[6] RELATIONS OF THE PROPERTIES OF WISCONSIN LOESS TO TOPOGRAPHY IN WESTERN IOWA [J]. AMERICAN JOURNAL OF SCIENCE, 1954, 252 (11) : 663 - &

[7] RUHE RV, 1954, AM RAILWAY ENG ASS B, V514, P639