TY  - BOOK
AU  - Stewart, Welby Earl,
TI  - Magnetic recording techniques
AV  - TK5981 .S77
U1  - 621.373 
PY  - 1958///
CY  - New York
PB  - McGraw-Hill
KW  - Magnetic recorders and recording
N1  - Includes bibliographical references and index
ER  -