(1973). Symposium on Behaviour of Earth and Earth Structures, University of Roorkee, 1973. Sarita.
Dyfyniad Arddull ChicagoSymposium on Behaviour of Earth and Earth Structures, University of Roorkee, 1973. Meerut: Sarita, 1973.
Dyfyniad MLASymposium on Behaviour of Earth and Earth Structures, University of Roorkee, 1973. Sarita, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.