Taxonomy, evolution and biostratigraphy of condonants from the Kechika Formation, Skoki Formation and Road River Group (Upper Cambrian to Lower Silurian), Northeastern British Columbia /
Leanne J. Pyle and Christopher R. Barnes.
- Ottawa : NRC Research Press, 2002.
- 227 PAGES صور وجداول ايضاحيات 28
"Issued by the National Research Council of Canada."