00253nam a2200109Ia 4500008004100000041000800041082000800049100002000057245003500077260002300112300000800135211209s1988    xx            000 0 und d  aeng  aJUL  aJULIAN, MICHAEL  aCIRCUITS, SIGNALS AND DEVICES   aLONDONbELBSc1988  a515