Search Results - "Sundt, Peter C"

Pre-columbian soil erosion, persistent ecological changes, and collapse of a subsistence agricultural economy in the semi-arid Tehuacán Valley, Mexico's ‘Cradle of Maize’ by McAuliffe, Joseph R, Sundt, Peter C, Valiente-Banuet, Alfonso, Casas, Alejandro, Luis Viveros, Juan

“…The cultivation of hillslopes in pre-Columbian times caused considerable soil erosion in the landscapes of the semi-arid Tehuacán Valley, south-central Mexico…”
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Pre-Columbian Soil Erosion, Persistent Ecological Changes, and Collapse of a Subsistence Agricultural Economy in the Semi-Arid Tehuac n Valley, Mexico's <'>Cradle of Maize<'> by McAuliffe, Joseph R, Sundt, Peter C, Valiente-Banuet, Alfonso, Casas, Alejandro, Viveros, Juan Luis

“…Pre-Columbian cultivation of hill slopes in south-central Mexico's semiarid Tehuac n Valley caused considerable soil erosion, including a very severe erosion…”
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Geophone having a non-conductive coilform by Sundt, Peter C.

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Population dynamics of the rare orchid, Spiranthes delitescens by McClaran, M.P. (University of Arizona, Tucson, AZ), Sundt, P.C

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