Allen, Roy Morris, 1882–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2279294A
- pdbooks.info ID: 166829
Roy Morris Allen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| Practical refractometry by means of the microscope: with listings of index liquids, and other aids for mineralogists | 1954 | Author | |  | |  | | 
| |