TY  - BOOK
ED  - Indian standards institution 
TI  - Methods of test for soils Part xxxix:  direct shear test for soils containing gravel
U1  - 624.131.377.620.176 
PY  - 1978///
CY  - New Delhi
PB  - Indian standards institution 
KW  - IS:2720(Part xxxix/sec I)-1977
ER  -