R.D. Lock has taught political science and been a career and guidance counselor for over forty years. He has written five editions of two college texts. Married for fifty years, he and his wife hav...ver másR.D. Lock has taught political science and been a career and guidance counselor for over forty years. He has written five editions of two college texts. Married for fifty years, he and his wife have traveled extensively – including five trips to Spain and Portugal.ver menos