Tree-Ring Bulletin, Vol. 17, No. 4 (1951) http://hdl.handle.net/10150/223986 2026-03-12T17:44:29Z 2026-03-12T17:44:29Z Tree-Ring Bulletin, Volume 17, Issue 4 (April 1951) http://hdl.handle.net/10150/262962 2020-04-02T13:00:48Z 1951-04-01T00:00:00Z Tree-Ring Bulletin, Volume 17, Issue 4 (April 1951) Complete issue of Tree-Ring Bulletin. 1951-04-01T00:00:00Z A Superior Sequoia Ring Record. V, 271 B.C.-1 B.C. Douglass, A. E. http://hdl.handle.net/10150/255374 2020-04-02T10:30:38Z 1951-04-01T00:00:00Z A Superior Sequoia Ring Record. V, 271 B.C.-1 B.C. Douglass, A. E. 1951-04-01T00:00:00Z Miscellaneous Ring Records. III Schulman, Edmund http://hdl.handle.net/10150/255355 2020-04-02T12:56:10Z 1951-04-01T00:00:00Z Miscellaneous Ring Records. III Schulman, Edmund 1951-04-01T00:00:00Z Southwestern Dated Ruins. VI Hall, E. T., Jr. http://hdl.handle.net/10150/255373 2020-04-02T12:56:10Z 1951-04-01T00:00:00Z Southwestern Dated Ruins. VI Hall, E. T., Jr. 1951-04-01T00:00:00Z