TY  - BOOK
T1  - NBS standard reference materials catalog /
DA  - 1981.
CY  - Washington :
ET  - 1981-83 ed.
CN  - QC100 .U57 no.260 1981/83
CN  - QC100
PB  - U.S. Dept. of Commerce, National Bureau of Standards,
PP  - Washington :
PY  - 1981.
N1  - Includes index.
ID  - 67321
KW  - Materials
TI  - NBS standard reference materials catalog /
ER  -