Terry J Logan: 2 books

Nowadays the environmental sustainability of the cropping systems is increasingly requested by the consumers. Conventional tillage practices, totally turning over the soil between the vineyard rows, may cause erosion due to rain as well as structure destruction of the soil in the long term. Conservation...

A well-established American professor of Geology is asked by the State Department to investigate goings on at an american owned gold mine in the interior of the small South American nation of Guyana. The mine is located on the border with Brazil and near the Guyana town of Lethem in the foothills...