Παραπομπή APA

(1957). Sulphur recovery plant from Kirkuk Natural Gas: Contract documents and specifications. Baghdad: [s.n.].

Παραπομπή Chicago Style

Sulphur Recovery Plant From Kirkuk Natural Gas: Contract Documents and Specifications. Baghdad: [s.n.], 1957.

Παραπομπή MLA

Sulphur Recovery Plant From Kirkuk Natural Gas: Contract Documents and Specifications. Baghdad: [s.n.], 1957.

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