Specification for screed board concrete vibrators :
Bureau of Indian Standards
Specification for screed board concrete vibrators : - - New Delhi BIS 1964 - 11 - NASA CR-3173 : 1979 .
693.546.4:69.002.5
Specification for screed board concrete vibrators : - - New Delhi BIS 1964 - 11 - NASA CR-3173 : 1979 .
693.546.4:69.002.5