Indian Standards Institution. (1966). Indian Standard : Methods of Test for Vulcanized Rubbers: : Part II - Hardness. Indian Standards Institution.
Chicago-tyylinen lähdeviittausIndian Standards Institution. Indian Standard : Methods of Test for Vulcanized Rubbers: : Part II - Hardness. N.Delhi: Indian Standards Institution, 1966.
MLA-viiteIndian Standards Institution. Indian Standard : Methods of Test for Vulcanized Rubbers: : Part II - Hardness. Indian Standards Institution, 1966.
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