%0 Journal Article %T Group Divisible Variance ¨C Sum Third Order Rotatable Design through Balanced Incomplete Block Designs in Four Dimensions %A G. Kerich %A M. Kosgei %A N. Chebet %J Asian Journal of Probability and Statistics %D 2018 %X (1) K. Rajyalakshmi, K. L. University, India. %U http://www.sciencedomain.org/abstract/25527