Gaya APA
ASTM, . (1997).
ASTM D 2939 - 94 ; ASTM D 2939 - 03 Standard test methods for emulsified bitumens used as preotective coatings .
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ASTM.
Gaya MLA
ASTM, .
"ASTM D 2939 - 94 ; ASTM D 2939 - 03 Standard test methods for emulsified bitumens used as preotective coatings".
:
ASTM,
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Diorama.