Minerals Yearbook, 2008, V. 1, Metals and Minerals - Google Books

https://books.google.de/books?id=tL4hau707bwC&pg=SA53-PA4&dq=Fertiberia

Data are provided for more than 80 minerals and materials, along with a presentation of survey methods, summary statistics for domestic nonfuel minerals, and trends in mining and quarrying in the metals and industrial minerals industry in the United…