(Q47694673)
Statements
1 reference
Fossil plants and coal: patterns of change in pennsylvanian coal swamps of the illinois basin (English)
1 reference
Phillips TL
1 reference
Peppers RA
1 reference
Avcin MJ
1 reference
Laughnan PF
1 reference
1 June 1974
1 reference
1 reference
184
1 reference
4144
1 reference
1367-1369
1 reference