TY  - BOOK
AU  - Hoover,David S.
TI  - The development and evaluation of an automated reflectance microscope system for the petrographic characterization of bituminous coals
PY  - 1981///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Petrographic microscope
N1  - Thesis (Ph.D.)-Pennsylvania State University, 1980
ER  -