Ram Singh, Ningthoujam.
Agricultural development in the north eastern region of India (including sikkim) 1951-52 to 1986-87 / - Ph.D. / - Imphal : Manipur University , 1987 - 333p :
N.E.
Agricultural development in the north eastern region of India (including sikkim) 1951-52 to 1986-87 / - Ph.D. / - Imphal : Manipur University , 1987 - 333p :
N.E.