An Analysis by National Geographic: Consumer Expenditures on Travel and Related Items by Family Income Quintiles. National Geographic,1251 Avenue of the Americas,New York,N.Y. 10020. July 1978. 25p
Restricted accessOtherFirst published online January, 1980
An Analysis by National Geographic: Consumer Expenditures on Travel and Related Items by Family Income Quintiles. National Geographic,1251 Avenue of the Americas,New York,N.Y. 10020. July 1978. 25p