TY - BOOK AU - Johnson Harry G. TI - Comparative cost and commercial policy theory in a U1 - X:54.1(X).N6, K9 PY - 1969/// CY - Karachi PB - P. I. D. E. Pakistan KW - Economics KW - International Trade N1 - Reprinted from Pakistan Development Review. 9(1), Spring 1969 ER -