An Evaluative Study of Various Audio-Visual aids used by Agricultural Extension officers and Village level workers in dissiminationg Agricultural information in Punjab

Sandhu, A. SPal, Dharm2019-08-132019-08-13197135566.pdfhttp://krishikosh.egranth.ac.in/handle/1/5810121169ennullAn Evaluative Study of Various Audio-Visual aids used by Agricultural Extension officers and Village level workers in dissiminationg Agricultural information in PunjabThesis