Tohutoro APA (7th ed.)
Singh, S. N. (2002). Blowing agents for polyurethane foams. Rapra Technology Ltd..
Tohutoru Kātū Chicago (17th ed.)
Singh, S. N. Blowing Agents for Polyurethane Foams. Shawbury, U.K.: Rapra Technology Ltd., 2002.
Tohutoro MLA (9th ed.)
Singh, S. N. Blowing Agents for Polyurethane Foams. Rapra Technology Ltd., 2002.
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