Screen LibraryEnergetics of percussive drills /
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| Main Authors: | |
|---|---|
| Corporate Authors: | |
| Group Author: | |
| Published: |
U.S. Dept. of the Interior, Bureau of Mines,
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| Publisher Address: | [Washington, D.C.] : |
| Publication Dates: | [1969] |
| Literature type: | Government Document Book |
| Language: | English |
| Series: |
Report of investigations ;
7253 |
| Subjects: | |
| Item Description: | "April 1969"--Cover. |
| Carrier Form: | ii, 31 pages : illustrations ; 26 cm. |
| Bibliography: | Includes bibliographical references (page 31). |
| Index Number: | TN23 |
| CLC: | TG52 |
| Call Number: | TG52/B887 |