00266nam a2200073Ia 4500082002000000245003100020100010000051008004100151  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