Gaya APA
ASTM, . (2005).
ASTM E 303 - 93 Standard test method for measuring surface frictional properties using the British Pendulum tester .
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ASTM.
Gaya MLA
ASTM, .
"ASTM E 303 - 93 Standard test method for measuring surface frictional properties using the British Pendulum tester".
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ASTM,
2005.
Diorama.