TY  - BOOK
ED  - Indian Standards Institution                                                                                                                                                                                                                                   . 
TI  - Method of test for determination of openness of fibarisation  of chrysotile asbestos fibre by air permeability method using Dyckerhoff apparatus / 
U1  - 666.9 
PY  - 1981///
CY  - New Delhi : 
PB  - Indian Standards Institution , 
ER  -