Author :
Reyes- Navarro, J
Author Statement :
by J. Reyes- Navarro,A. Davis
Publication :
The Pennsylvania State University
Collation :
viii, 141 p.: illus.; 31 cm
Series :
Special Research Report. no: SR- 110
SubTitle :
its forms and distribution as related to the environments of coal deposition in three selected coals from Western Pennsylvania