00442nam a2200121Ia 4500 251203b |||||||| |||| 00| 0 eng d 382.0973 Ul42.AC Ullman, E. L. 11802 American commodity flow : a geographical interpretation of rail and water traffic based on principles of spatial interchange / Seattle: Washington University, 1957 xxii, 215p. ddc BK 0 0 0 382_097300000000000_UL42_AC 0 11125 ISI ISI 1998-09-07 0 382.0973 Ul42.AC DP856 2019-02-14 00:00:00 BK 9004 9004