Gaya APA
ASTM, . (1990).
ASTM D 2187 - 82 Standard test methods for physical and chemical properties of particulate ion exchange resins .
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ASTM.
Gaya MLA
ASTM, .
"ASTM D 2187 - 82 Standard test methods for physical and chemical properties of particulate ion exchange resins".
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ASTM,
1990.
Diorama.