Author:

Boulter,M.C.;Wilkinson,G.C.

Year:

1977

Title:

A system of group names for some Tertiary pollen.

Reference:

Boulter,M.C. et al. (1977) A system of group names for some Tertiary pollen. Palaeontology Vol. 20 # 3 P. 559- 579

Google Academy:

try to search by title in english