00286    a2200109   4500020001500000082001800015100001800033245004100051260004000092300001600132650002800148  a0859340961  a621.3817bPEN  aPenfold, R.A.  aHow to design and make your own PCBs  aEnglandbBernard Babanic1983g1983  a66p.c17cm.  aCOMPONENTS AND CIRCUITS