Cooperative mining series. Bulletin.

no.1-12(1913-1915); no.1-10; no.1 1913; no.5 1914; no.6 1914; no.1-13 1913-1915; no.1-9(1913-1915); no.10-15(1915-1916); no.11-15 & maps; no.11 1915; no.13-25(1915-1920); no.13 1915; no.14 1915; no.3 1916; no.15 1916; no.16-20(1917-1918); no.16-24(1917-1919); no.16-25 & maps; no.16 1917; no.20 1918; no.21-24(1918-1919); no.21 1918; no.22-30; no.22 1918; no.19 1919; no.23 1919; no.24 1919; no.25 1920; no.14-23 1915-1923; no.26-33 & maps; no.29 1925; no.30 1925; no.27 1927; no.24-33 1919-1930; no.25-33(1920-1930); no.26-33(1921-1930)