共 7 条
[1]
FRYE JC, 1952, KANSAS GEOL SURVEY B, V99, P1
[3]
HORBERG L, 1953, ILLINOIS STATE GEOL, V165, P1
[5]
LEIGHTON MM, 1947, SOIL SOC AM P, V12, P389
[6]
LEIGHTON MM, 1947 C LOESS DEP
[7]
Periglacial involutions in Northeastern Illinois
[J].
JOURNAL OF GEOLOGY,
1942, 50 (02)
:113-133