Canadian bark-beetles. Part I
Swaine, J.M.
Canadian bark-beetles. Part I - Ottawa 1917 - 1-32 p. - Beetles Dominion of Canada Department of Agricultural Entomological Branch. Bulletin No. 14 .
Canadian bark-beetles. Part I - Ottawa 1917 - 1-32 p. - Beetles Dominion of Canada Department of Agricultural Entomological Branch. Bulletin No. 14 .