캐나다
Late Devonian conodont biostratigraphy of the earn group with age constraints for stratiform mineral deposits, Selwyn and Kechika Basins, northern British Columbia and Yukon
A copy of this thesis is available at the EMR library – QE195 I7 1990. This thesis is available online at https://open.library.ubc.ca/cIRcle/collections/ubctheses/831/items/1.0052650