Quarterly bulletin.
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| Format: | Serial |
| Language: | English |
| Published: |
East Lansing, Mich.
[publisher not identified] ;
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| Subjects: | |
| Online Availability: |
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| Published: | v. 1-50; Aug. 1918-68. |
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| Item Description: | Some issues also on 35 mm. microfilm. |
| Physical Description: | 50 volumes : illustrations ; 23 cm. |
| ISSN: | 0097-6911 |