Piper Aircraft Corp has adopted course to assist salesmen, dealers and service operator personnel in developing their abilities for selling of aircraft, aviation products and services; course consists of series of 24 field tested weekly lessons.
Piper's sales training course
Aero Digest
Aero Digest ; 52 , n 1
1946
Aufsatz (Zeitschrift)
Englisch
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BUSINESS - Lights to guide Piper's way
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Piper's new twin engined plane
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