TY - BOOK AU - Beath, John AU - Katsoulacos, Yannis TI - THE ECONOMIC THEORY OF PRODUCT DIFFERENTIATION SN - 0521335523 U1 - 338.6 PY - 1991/// CY - Cambridge PB - Cambridge Univ. Pr. KW - Diversification In Industry N1 - Bibliography : P. 194-199; Including Index ER -