TY  - GEN
AU  - Davis, Raymond
AU  - Walters, Jr.
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1920-09-01 04:09:00
DO  - https://doi.org/10.6028/NBS.PC.1
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1920
TI  - A proposed atlas of photographic negative emulsions:
ER  -