00339nam a2200121 a 4500008004100000020001500041050001600056100001800072245005800090260004400148300001600192350000900208120416s0000    ||||||||||||||||| ||    u  a083062614X  aTK 6563 Sch  aSchultz, John10aUnderstanding and using radio communication receivers  aBlue Ridge Summit, Pa.bTAB Booksc1972  a192p. : ill  a0.00