TY  - RPRT
TI  - Contributions to economic geology (short papers and preliminary reports), 1930, Part I, Metals and nonmetals except fuels. A geologic study of the Madden Dam project, Alhajuela, Canal Zone
AU  - Frank Reeves
AU  - C. P. Ross
PY  - 1931
DO  - 10.3133/b821b
UR  - https://pubs.usgs.gov/publication/b821B
ID  - b821B
ER  -