Bulletin / North Dakota Geological Survey.

no.1-23; no.1-11; no.1-9; no.1 yr.1920; no.1-3 1920-1923; no.1-5 1920-1926; no.2-05 yr.1923-32; no.6-07 yr.1927-32; no.3 1932; no.3-10 (1924-37); no.4-10 1925-1937; no.7 maps; no.7,9-11 1932-1938; no.10-20; no.11-22; no.11 1938; no.11-17 1938-1942 incompl; bull.11-17 (1938-44); bull.18 (1944); no.18 1944; bull.19-25 (1944-50); no.20-27 yr.1945-52; bull.26-29 (1952-55); no.21-31; no.25-30(1950-1956); no.9-14 yr.1937-59; no.16 yr.1959; no.17 yr.1959; no.20-35 1945-1960; no.29-35 yr.1955-60; bull.30-36:pt.2 (1956-62); no.32-36; no.36 1962; bull.37-39 (1962-63); no.36-39 yr.1962-63; no.37-40; no.37-40 1962-1963; bull.36:pt.3 (1963); no.31-40(1956-1963); no.40-41; no.41; no.41 1963-1965; no.41-42(1963-1965); no.42; no.43; no.44; no.44:1-2; no.44:3; no.45; no.45 1965; no.42 1965-1966; bull.43 (1964/67); no.43 1964-1967; no.44 1965-1966,1968; no.45:2-no.46(1965-1967); no.46; no.46-47 1966-1968; no.47; no.47-48(1966-1969); bull.51 (1967/70); no.48; no.48 1967-1970; no.49; no.50; no.50:1-3; no.51; no.51-54 1967-1970; no.52-53; no.53-54 yr.1968-70; bull.49 (1967/71); no.49-50 1967-1968,1971; bull.50:1 (1968/71); 50:pt.1 (1968/71); no.49-50(1967-1971); no.54; no.55:3-4; no.55:1-2; no.56; no.57; no.58; no.58-59 1971; no.59 pt.1; no.59; no.60; no.60-61; no.61 1972; no.62; no.63; no.64; no.64:2(1973); no.64:1(1975); no.65; no.65:2(1974); no.66; no.66:2(1975); no.66:1-3; no.67:2(1975); no.67; no.68:2-3; no.69; no.70; no.70-72 imcompl.; no.71; no.72; no.72 pt.2 1972; bull.54-55:pt.3 (1969-73); no.55 1969,1971-1973; no.56 1970,1973; bull.57 (1971/73); no.57 1971,1973; no.60 1971,1974; no.59 pt.1-2 yr.1971-75; bull.64:pt.1-2 (1973-75); bull.62:pt.1-2 (1973-75); no.62 pt.1-2 1973,1975; no.61-62(1972-1975); bull.62:pt.3-bull.63 (1973-77); no.63-64 yr.1973-77; no.58-59(1971-1977); no.59 pt.3 1977; no.62 pt.3 1977; no.64 pt.3 1977; no.63-64 1973,1975,1978 incompl; no.65 yr.1974-79; no.65 1974,1978-1979; no.66-67 1975,1979 incompl; bull.68:pt.2-3 (1976/79); no.68 yr.1976-79; no.68 pt.2-3 1976-1979; no.68:pt.3 1979; no.69:pt.1 1979; no.