Heir, Martin
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 63352
Martin Heir Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| How to figure type composition by known factors ; a new, easy, and labor-saving method of finding the number of ems in any form of type matter ; also reference tables, weight of linotype composition, and other information of value to printers, publishers, and printing buyers | 1914 | Author | |  | |  | |    
| |
| Twentieth century encyclopedia of printing | 1930 | Author | | | | | | ||