Morkre, Morris E. The effects of restrictions on states imports : five case studies and theory / Morris E. Morkre and David G.Tarr - Washington : United States Government Printing Office, 1980 - xv, 212 p. : tables ; 18 cm. Subjects--Topical Terms: Nontariff trade barriersPrices--United States Dewey Class. No.: 382.50973