Research into the effectiveness of a radio and loudspeaker combination for schools in Papua New Guinea /

समान संसाधन

• Radio for education and development /
  द्वारा: Jamison, Dean T.
  प्रकाशित: (1978)
• Radio handbook
  द्वारा: Orr, William Ittner
  प्रकाशित: (1981)
• Radio communication /
  द्वारा: Lovering, W. F.
  प्रकाशित: (1966)
• Radio research: a comprehensive guide 1975-85 /
  द्वारा: Langham, Josephine
  प्रकाशित: (1986)
• Test equipment for the radio amateur /
  द्वारा: Gibson, H. L.