Gopal Ranjan, Rao A S R, . (1991). Basic and Applied Soil Mechanics. New Delhi: WILEY EASTERN.
Gopal Ranjan, Rao A S R, . 1991. Basic and Applied Soil Mechanics. New Delhi: WILEY EASTERN.
Gopal Ranjan, Rao A S R, . Basic and Applied Soil Mechanics. New Delhi: WILEY EASTERN. 1991.