ISBN-13: 9786202552608 / Angielski / Miękka / 2020 / 192 str.
All human and non-human sources of information including man, material, devices and equipments, which help in flow of message. Sources of information have been popular area of research, under which various issues like source availability utilization, credibility and information evaluation by farmers have been studied. As the number of studies under this head is abundant, care has been taken to screen and present those directly related to theme of research study.