5 1 50 Ronald J. Wonnacott Additional Author thomas h. wonnacott Additional Author mixed material 0471959693 New York Library of congress cataloging 1970 A problem solving text Barry r. chiswick Additional Author Stephen j. chiswick Additional Author mixed material 0839106947 london University park press 1975 Lawrence r. klein Additional Author mixed material India Prentice hall of india private limited new delhi 1975 statistical foundations and applications Phoebus j. dhrymes Additional Author mixed material USA Harper & row 1970 Ronald J. Wonnacott Additional Author thomas h. wonnacott Additional Author mixed material 0471959693 london Library of congress cataloging 1970