Displaying 1 - 4 of 4
Hamilton, Taylor, Vogel
Evidence for early agriculture can be obtained from pollen profiles indicating forest clearance1. The practice of cultivation is widely believed to have been introduced into the interlacustrine region of central Africa by Bantu-speaking iron-…
Type: Document
Year: 1986
Kalisz, Dorian, Stone
[no description entered]
Type: Document
Year: 1986
Galinat, Ruppe
Another large and significant collection of prehistoric maize cobs (Zea Mays L.) with Tripsacoid characteristics that are indicative of introgression from either Tripsacum spp. or its maize derivative, teosinte (Zea mexicana Reeves and Mangelsdorf…
Type: Document
Year: 1961
Douglass
The purpose of this paper is to emphasize the precision of the dating of individual rings in long tree-ring chronologies by the use of methods and procedures classed under the name 'dendrochronology'. The operations are based on climatic impressions…
Type: Document
Year: 1946