Παραπομπή APA

(1961). ASTM specifications for steel piping materials (18th ed.). Philadelphia: American Society for Testing and Materials.

Παραπομπή Chicago Style

ASTM Specifications for Steel Piping Materials. 18th ed. Philadelphia: American Society for Testing and Materials, 1961.

Παραπομπή MLA

ASTM Specifications for Steel Piping Materials. 18th ed. Philadelphia: American Society for Testing and Materials, 1961.

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