TY  - GEN
AU  - Greenfeld, Sidney H
AU  - Ishihara, Shigeru
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1957-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.RPT.5224
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1957
TI  - Stain indices of twenty-one asphalts ::first supplement to NBS Report no. 4732 report on the evaluation of twenty-one coating-grade roofing asphalts
ER  -