Electricity supply meters
Perrigo, A.E.B
Electricity supply meters Perrigo, A.E.B - London Chapman & Hall Ltd 1947 - vii,356 o. : ill, ; 20 cm.
MCE
621.3746 / PER
Electricity supply meters Perrigo, A.E.B - London Chapman & Hall Ltd 1947 - vii,356 o. : ill, ; 20 cm.
MCE
621.3746 / PER