TY  - BOOK
AU  - Underhill,Charles R.
TI  - Magnets: a practical treatise on electromagnetic devices, their circuits, and the specific forms and characteristics of electromagnets and permanet magnets employed 
AV  - ACM 3259 
PY  - 1924///
CY  - New York
PB  - McGraw-Hill
KW  - Electromagnetismo
N1  - Archivo de la Acción Católica Mexicana
ER  -