Do the Abietineae extend to the carboniferous?

APA Citation

Thomson, R. Boyd., Allin, A. Everett. (1912). Do the Abietineae extend to the carboniferous? [Chicago].

MLA Citation

Thomson, Robert Boyd, 1870-1947, and Arthur Everett Allin. Do the Abietineae Extend to the Carboniferous? [Chicago], 1912.

Warning: These citations may not always be complete (especially for serials).