"0, . "
the i.e.s. code remcommendations for good interior lighting: / - 1 ed. - uk : i.e.s. 1961. - "v, 60p.; 25 cm."
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621. 3 ill
the i.e.s. code remcommendations for good interior lighting: / - 1 ed. - uk : i.e.s. 1961. - "v, 60p.; 25 cm."
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621. 3 ill