Introduction to Valves
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History, evolution and purposes of hydraulic valves; simple and compound type. An Introduction to Vectors: Copla nar Concurrent Forces U.S. Office of Education, 1945. (Engi neering Fundamentals of Me-
Complete catalog record
Series: Hydraulic Valves Series
Film number: SN 1809-a
Type: Filmstrip
Film number: SN 1809-a
Type: Filmstrip
Source: 3434 U.S. Government Films · Record added 2026-07-13 14:19:25