Documents
eHRAF is comprised of thousands of ethnographic sources including monographs, journal articles, dissertations and manuscripts. Use this page to find relevant documents by searching or filtering. Each document in eHRAF also contains a Publication Information page with added metadata including brief abstracts written by HRAF analysts who have subject-indexed the file.
Engineering aspects of Tiwanaku groundwater-controlled agricultureessay 1996 • Ortloff, Charles R.
Tiahuanaco • South America > Central Andes
Ortloff discusses and analyzes the ground water control devices and strategies used by the people of Tiwanaku in raised field agriculture. Several mathematical and computer models are constructed to model the rise and fall of the water in Lake Titica...Agroecological perspectives on the decline of the Tiwanaku stateessay 1996 • Kolata, Alan L. & Ortloff, Charles R.
Tiahuanaco • South America > Central Andes
'This chapter examines the collapse of the Tiwanaku state through … its agricultural history. We argue that the direct cause of Tiwanaku's decline … was the deterioration and ultimate abandonment of its regional-scale agricultural systems. We present...