Sonar probing as a mining and tunneling tool : progress report September 1, 1977 - June 1, 1978 / submitted to National Science Foundation ; submitted by Robert R. Unterberger.
Description: vii, 65, [36] leaves : illustrations ; 28 cmContent type:- text
- unmediated
- volume
| Item type | Current library | Shelving location | Call number | Status | Date due | Barcode |
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Books
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OCLC Data | Unknown | Available | 0000000011982 |
Photocopy of NTIS publication PB-289810.
"This material is based upon work supported by the National Science Foundation under Grant No. APR 76-21764."
"Report Date: June 1, 1978."
Includes bibliographical references (leaf 4-29).
NLJCols20082021
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