Helden, A. K. v. (1980). Organophilic silica dispersions: Preparation, characterization and particle-interactions. s.n.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHelden, Arend Kuindert van. Organophilic Silica Dispersions: Preparation, Characterization and Particle-interactions. [S.l.: s.n.], 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHelden, Arend Kuindert van. Organophilic Silica Dispersions: Preparation, Characterization and Particle-interactions. s.n.], 1980.
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