TY  - BOOK
AU  - Schopf,James Morton
TI  - Contributions to Pennsylvanian paleobotany Mazocarpon oedipternum,: sp. nov. and Sigillarian relationships,
T2  - Illinois.  State geological survey.  Report of investigations
AV  - QE971 .S3
U1  - 567/.9 
PY  - 1941///
CY  - Urbana, Ill.
KW  - Paleobotany
KW  - Pennsylvanian
KW  - Mazocarpon
KW  - Illinois
N1  - At head of title: State of Illinois, Dwight H. Green, governor.  Dept. of registration and education, Frank G. Thompson, director.  Division of the State geological survey, M.M. Leighton, chief, Urbana; "References": p.38-40
ER  -