Singh, L. P. Digital protection protective relaying from electromechanical to microprocessor - Second Edition - New Delhi New AGE, 1997 - 272 p ISBN: 8122410537 Subjects--Topical Terms: Electronic Engineering LC Class. No.: 621.31 SIN 1997 Dewey Class. No.: 621.31 SIN 1997 National Library of Medicine Call No.: 621.31 SIN 1997