1940s out of print technical book radio servicing theory & practice

Old 1940s vacuum tube vintage technical book on repairing radios... Radio Servicing - Theory & Practice by Abraham Marcus and published by Prentice-Hall, Inc.

This technical book is copyright 1948 (this is a 1951 printing) and has 775 pages including 12 pages of photos or illustrations of radio components, switches, resistors, capacitors, transformers etc.. There are also many schematics and diagrams.

There is some light soil to the cover.