00731cam a22002531 4500 gs 53000090 DLC 20260227111359.0 790607s1952 inua b s000 0 eng gs 53000090 (OCoLC)5044240 DLC TxCM DLC premarc QE109 .A3 no. 4 Guennel, Gottfried Kurt, 1920- Fossil spores of the Alleghenian coals in Indiana. Bloomington, 1952. 40 p. illus. Indiana. Geological Survey. Report of progress no. 4 "References": p. 40. Paleobotany Indiana. Plant spores, Fossil Indiana Coal Indiana. 28722 28722