TY  - BOOK
ED  - Electrical testing Laboratories, (New york)
TI  - A testing service
U1  - 621.37072 
PY  - 1900///]
CY  - New York
PB  - Electrical testing Laboratories
KW  - Electric testing
KW  - Electric measurements
KW  - Instruments
KW  - Electric apparatus and appliances
ER  -