Elshafei, A. (1969). Numerical Control Series Post Processors. The Institute of National Planning.
Chicago-viite (17. p.)Elshafei, Alwalid. Numerical Control Series Post Processors. Cairo: The Institute of National Planning, 1969.
MLA-viite (9. p.)Elshafei, Alwalid. Numerical Control Series Post Processors. The Institute of National Planning, 1969.
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