Event stratigraphy around the Precambrian/Cambrian boundary with special emphasis on western Mongolia and south China : diss. / G. A. Shields ; Swiss Federal institute of technology Zürich. - Zürich : [б.в.], 1997.. - 156 p.: fig.. - (Diss. ETH ; 11783) ------------ Дод. точки доступу: Swiss Federal institute of technology Zürich