MIL-I-6181
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MIL-I-6181 1950 (PDF)
MIL-I-6181 1950 reduced file size (PDF)
MIL-I-6181B 1953 (PDF)
MIL-I-6181 1953 reduced file size (PDF)
MIL-I-6181B 1953 - Line Impedance Stabilization Is In Its Seventieth Year, and Going Strong (PDF)
MIL-I-6181B 1953 - Seventy Years of Electromagnetic Interference Control in Planes, Trains and Automobiles (and Ships and Spaceships, as well) (PDF)
NADC-EL-5515 1955 (PDF)
MIL-I-6181C 1957 (PDF)
MIL-I-6181C 1957 reduced file size (PDF)
MIL-I-6181D 1959 (PDF)
MIL-I-6181D 1959 reduced file size (PDF)