TY  - BOOK
AU  - Hawkings,R.C.
AU  - Merritt,W.F.
AU  - Craven,J.H.
ED  - Atomic Energy of Canada Limited
ED  - Proceedings of a symposium
TI  - The maintenance of radioactive standards with the 4Ò proportional counter
SN  - 0067-0367
PY  - 1951///
CY  - Chalk River
PB  - AECL
ER  -