Vol. 5 No. 1 (2006): Mapana Journal of Sciences Research Articles Modified Second Order Slope Rotatable Designs using Symmetrical Unequal Block Arrangements with two Unequal Block Sizes B. Re. Victorbabu more info B. Re. Victorbabu Acharya Nagarjuna University, Guntur DOI: https://doi.org/10.12723/mjs.8.3 Published 2006-06-21 Abstract In this paper, a new method of construction of modified second order slope rotatable designs using symmetrical unequal block arrangements with two unequal sizes are constructed.