Behaviour of the primary sector in Bihar: A case of the District of Ranchi 1949-50 to 1971-72
study of the estimation of primary sector income of Darbhanga District in North Bihar Plains 1949-50 to 1971-72
comparative study of primary sector behaviour of the districts of Hazaribagh and Palaamau of the State of Bihar 1949-50 to 1971-72
