On the reduction of certain visual catalogues to the Harvard photovisual system.
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Publication
1938 - , [Cambridge, Mississippi
Language
English
Word Count
49,750 words, Guess
Page Count
199 pages
Identifiers
- Open LibraryOL6185822M
- OCLC Control Number31217131
- Library of Congress Control Number55030551
Classifications
- LCCQB4 .H33 vol. 89, no. 12
Subjects
Genres
- Catalogs.
Series Statement
- Annals of Harvard College Observatory,
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