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- 80621035 contributor B3922155.
- 80621035 created "1979.".
- 80621035 date "1979".
- 80621035 date "1979.".
- 80621035 dateCopyrighted "1979.".
- 80621035 extent "v, 54 p. :".
- 80621035 isPartOf "Information circular - Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey ; 86".
- 80621035 isPartOf "Pennsylvania. Topographic and Geologic Survey. Information circular ; 86.".
- 80621035 issued "1979".
- 80621035 issued "1979.".
- 80621035 language "eng".
- 80621035 publisher "Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey ; additional copies may be purchased from State Book Store,".
- 80621035 spatial "Pennsylvania.".
- 80621035 subject "557.48 s 553.6/26/097482".
- 80621035 subject "Gravel Pennsylvania.".
- 80621035 subject "QE157 .A2915 no. 86 TN939".
- 80621035 title "Quality of gravel resources in northwestern Pennsylvania / Jesse L. Craft.".
- 80621035 type "text".