Biblio

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1937
Douglass, AE. 1937. Tree Rings And Chronology. University Of Arizona Bulletin VII (No. 4). University Of Arizona Bulletin.
PDF icon Douglass, AE_Tree Rings and Chronology_1937.pdf (58.21 MB)
1935
Douglass, AE. 1935. Dating Pueblo Bonito And Other Ruins Of The Southwest. National Geographic Society. National Geographic Society. National Geographic Society.