Proportional and servo valve technology / H. Dõrr... [et al.]
Proportional and servo valve technology / H. Dõrr... [et al.]
. - Lohr am Main : Mannesmann Rexroth, cop. 1986
. - 259 p., pag. var. : il. color. 31 cm
. - (The hydraulic trainer; 2)
621.22