National Conference on Fluid Power Natioanal Conference on fluid power,1977 International Conference on Fluid Sealing Proceedings of the national conference on fluid power National Conference on Fluid Power(Chicago, 1964) International conference on Pressure Surges International conference on ferrites 2 International conference on Gas Discharges Natioanl Conference on Fluid Power,33d,Chicago,1977 National Conference on Fluid Power 31st Chicao 1975