Papua New Guinea. Department of Information and Extension Services.
Pilot study : perception of some aspects of illustrative material / Department of Extension Services. - Port Moresby : Dept. of Information and Extension Services, 1971. - 27 p. : 25 cm.
Perception.
152.14 / P218
Pilot study : perception of some aspects of illustrative material / Department of Extension Services. - Port Moresby : Dept. of Information and Extension Services, 1971. - 27 p. : 25 cm.
Perception.
152.14 / P218