all such systems are important, the Proterozoic column This volume concerns the geology of China, and it examinesthat concern by expositionsofthe stratigraphy,

This volume summarizes the results of a survey of British Upper Carboniferous sites, undertaken between 1978 and 1990 as part of the Geological Conservation Rev

"The most comprehensive summary available on the stratigraphic occurrence, geographic distribution, phylogeny, and taxonomy of Early Permian colonial rugose cor