TY  - GEN
AU  - B L Bean
AU  - John R Dise
C2  - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1969-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.BSS.17
LA  - en
PB  - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1969
TI  - Causes of variation in chemical analyses and physical tests of Portland cement:
ER  -