TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:1121-(Pt.4)-1974. Indian standard methods of test for determination of stregth properties of natural building stones. Pt.4 : shear strength
U1  - IS CODE 
PY  - 1989///
CY  - New Delhi
PB  - Bureau of Indian Standards
N1  - ENG
ER  -