Cite
MLA Citation
British Standards Institution,. Method for Rockwell superficial hardness test (N and T scales).. London : British Standards Institution, 1967. http://access.bl.uk/ark:/81055/vdc_100104955774.0x000001
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British Standards Institution,. Method for Rockwell superficial hardness test (N and T scales).. London : British Standards Institution, 1967. http://access.bl.uk/ark:/81055/vdc_100104955774.0x000001