J. E. Obeng-Asamoah

titleISBN-13
(ISBN-10)
year of publication
Agriculture Extension: Training and Visit System/Wb0140978-92-5-1O2O14-2
(92-5-1O2O14-O)
1989

e.a. · J. A. · J. E. · o.A.

J. E. Oeppen