REXFORD, D. L. (1970). VARIABLE RESONANT FREQUENCY SPRING-MASS SYSTEM DEVICE.
Chicago Style (17th ed.) CitationREXFORD, DONALD L. VARIABLE RESONANT FREQUENCY SPRING-MASS SYSTEM DEVICE. 1970.
MLA (9th ed.) CitationREXFORD, DONALD L. VARIABLE RESONANT FREQUENCY SPRING-MASS SYSTEM DEVICE. 1970.
Warning: These citations may not always be 100% accurate.