F

Frank Darwyn Spencer

1904

4 books found

Books by Frank Darwyn Spencer
Coal resources of the PhilippinesFrank Darwyn Spencer
⏱ 52m

Coal resources of the Philippines

Frank Darwyn Spencer

195752 pp.
Coal resources of ColoradoFrank Darwyn Spencer
⏱ 17m

Coal resources of Colorado

Frank Darwyn Spencer

195317 pp.
Coal resources of IndianaFrank Darwyn Spencer
⏱ 42m

Coal resources of Indiana

Frank Darwyn Spencer

195342 pp.
Coal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld Counties, ColoradoFrank Darwyn Spencer
⏱ 50m

Coal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld Counties, Colorado

Frank Darwyn Spencer

198650 pp.