George Thomas & Mani K P. (1994). Input management in dairy co-operatives of Ollukkara Block. Department of Co- operative Management, College of Co- operation, Banking and Management.

George Thomas and Mani K P. Input Management in Dairy Co-operatives of Ollukkara Block. Vellanikkara: Department of Co- operative Management, College of Co- operation, Banking and Management, 1994.

George Thomas and Mani K P. Input Management in Dairy Co-operatives of Ollukkara Block. Department of Co- operative Management, College of Co- operation, Banking and Management, 1994.