Productivity Services International. (1971). Handbook of 100 new small industry schemes. Air conditioned.
シカゴスタイル引用形Productivity Services International. Handbook of 100 New Small Industry Schemes. Tardeo: Air conditioned, 1971.
MLA引用形式Productivity Services International. Handbook of 100 New Small Industry Schemes. Air conditioned, 1971.
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