A Field Guide to Collecting Cones of British Columbia Conifers / Hl. zos. F. T. Portlock. -- 1.Edit. -- Victoria : Canadian Forest Service, 1996. -- 91 s.: far. obr., tab. -- ISBN 0-662-24929-1

I. Portlock, F. T.

630*232.312+630*174.7+630*232.3+(711)
ZV001