Program: HathiTrust Digital Library
- Publisher: U.S., Dept. of the Interior, Geological Survey
- Print ISSN: 0043-1400
- Electronic ISSN:
- OCLC Number: 2754820
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
Materials | Archive Action | Date of Action | Program | Status/Note |
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1950-52 1950-1952; 1953-55 1953-1955; 1956 1956; 1957 1957; 1958 1958; 1959 1959; 1960-61 1960-1961; 1962 1962; 1963 1963; 1964 1964; 1965 Sep-Nov; 1965-66 1965-1966; 1966-69; 1967-69 1967-1969; 1970-71 1970-1971; 1968-1972; 1972 Jan-Jul, Sep-Dec; 1973 Jan-May, Jul-Dec 1972-73; 1970-1974; 1974-1975 1974-1975; 1972-1976; v.14-16 1973-1976; 1976 Jan-Oct, Dec 1976; 1975-1978; v.17-18 1977-1978; 1978 Jan-Feb, Apr-Dec 1978; 1977-1979; 1979-1980; 1979-81; 1981-1982JUNE 1981-1982; 1981-1982; 1982 Jan-Jun
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committed to retain | 2022-11-15 | HTDL |
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