00259nam a2200073Ia 4500082002000000245003100020100009300051008004100144  aST 621.381 VANH 0aIndustrial electronics N2   a VAN HEERDEN, R B J (Roelof Barend Johannes)   Northcliff [Johannesburg], 2005  1st ed  210817s9999    xx            000 0 und d