Rocks and minerals.
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| Format: | Journal |
| Language: | English |
| Published: |
Peekskill, N.Y.
[publisher not identified] ;
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| Item Description: | Organ of the Rocks and Minerals Association, Mar. 1928- Subtitle varies. "Opal bibliography, by G. Fredrick Sheperd": volume 8, pages 51-60. |
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| Publication Frequency: | Bimonthly Jan./Feb. 1978- |
| ISSN: | 0035-7529 |