TY  - RPRT
TI  - Munsell color value as related to organic carbon in Devonian shale of Appalachian basin
AU  - John W. Hosterman
AU  - Sallie I. Whitlow
PY  - 1981
DO  - 10.1306/2f9197ce-16ce-11d7-8645000102c1865d
UR  - https://pubs.usgs.gov/publication/70011956
ID  - 70011956
ER  -