Bulletin - Colorado Geological Survey.

1-2 (1909); no.1-2 1909; c.1 v.1-2; v.1-2(1909); v.1-2 (1909); 1-2 (1910); no.1-2 1910; 3 (1912); no.3 1912; 4-5 (1913); 6 (1913); no.4-5 1913; no.6 1913; 7 (1914); 8 (1914); no.7 1914; no.8 1914; 9 (1915); no.8 1915; no.9 1915; 10 (1916); no.10 1916; 13 (1917); 12 (1917); no.13 1917; no.13-15 1917-1919; 14-15 (1919); no.11-12 1917-1920; 17-18 (1919-1920); 17-19 (1919-20); 23-25 (1920); 21-22 (1920); 11 (1920); no.16a 1920; no.21-23 1920; no.21-24 1920; no.14-19 1919-21; 16 (1921); no.25-26 1921; no.20-22 1920-1924; c.1 v.4-5; v.4-5; v.4-5(1913); v.6; v.8; v.9; v.10-11; c.1 v.11; v.12; v.13; v.14-16; v.17-19; c.1a v.19-25 1920-24; 20-25 (1921-24); no.24a 1924; no.21-24,26-28,30-31 1925; no.34a 1972; 33-35 (1971-74); no.38 1976; 38-39 (1976-78); 41-43 (1978-81); 44-45 (1981-83); 46 (1985); 48 (1988); no.49 1992; v.21-25; c.1 v.31; v.32-34A; v.35; v.37-38; v.46; v.51, 53; c.1 v.51; c.1 v.53; v.12(1917); v.6(1913); v.7(1914); v.8(1915); no.8; no.38-39; v.17(1919)