TY  - RPRT
TI  - Simulated precipitation reference materials, IV 
AU  - Koch, W F
AU  - Marinenko, G
AU  - Stolz, J W
PY  - 1982
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 82-2581
DO  - 10.6028/NBS.IR.82-2581
ER  -