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100			_aSantos Ceballos, Guillermo alberto
245		0	_aCriptógamas del jardín botánico José celestino mutis : _bmusgos helechos y plantas afines / Guillermo Alberto Santos Ceballos , René Armando Alfonso Moreno
520			_a1 First principles ; 2 Characterisc of voltages and currents ; 3 Natural response ; 4 Series electric circuits ; 5 Complete solutions of series circuits ; 6 Parallel and series-parallel circuits ; 7 Electric networks ; 8 Nonlinear resistive circuit ; 9 Electron physics ; 10 Electronic devices ; 11 Linear operation ; 12 Nonlinear operation , 13 Feedback circuits ; 14 Electronic analog computers ; 15 Digital computer ; 16 Magnetic fields and circuits ; 17 Generation of voltages ; 18 Electromagnetic Forces and torque ; 19 Linear aproximation to machine analysis ; 20 Automatic control sistems ; APPENDIX 1 Characteristic of vacuum tubes and transistors ; APPENDIX 2 ; Electric indicating Instrumets ; APPENDIX 3 letter symbls used in the text ; APPENDIX 4 Answers to some problems
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