TY  - BOOK
AU  - Langman, Henry Robert
TI  - HOW TO MAKE WORKING DIAGRAM MODELS ILLUSTRATING ELECTRICAL PRINCIPLES
U1  - 621.31 
PY  - 1953///
CY  - London
PB  - Technical Press
KW  - Electric Machinery -- Design And Construction
KW  - Electric Engineering -- Study And Teaching
ER  -