APA
Indian standards institution, . (1977). Code of practice for determination of specific surface area of powders by air permeability methods,IS:8425-1977. New Delhi: Indian standards institution.
Chicago
Indian standards institution, . 1977. Code of practice for determination of specific surface area of powders by air permeability methods,IS:8425-1977. New Delhi: Indian standards institution.
Harvard
Indian standards institution, . (1977). Code of practice for determination of specific surface area of powders by air permeability methods,IS:8425-1977. New Delhi: Indian standards institution.
MLA
Indian standards institution, . Code of practice for determination of specific surface area of powders by air permeability methods,IS:8425-1977. New Delhi: Indian standards institution. 1977.
