A Graphic Representation of the Friction of Distance in Gravity Models, 1968

File — Box: 4, Folder: 19

Dates

Photo positives, black ink reproductions (proofs?)

Part of the University of Kansas. Kenneth Spencer Research Library Repository

Contact:
1450 Poplar Lane
Lawrence KS 66045-7616 United States
785-864-4334
ksrlref@ku.edu