Paleozoic spores and pollen: Lower and Middle Palaeozoic record of terrestrial palynomorphs. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.)
Reference:
Richardson,J.B. (1996)
Paleozoic spores and pollen: Lower and Middle Palaeozoic record of terrestrial palynomorphs. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) American Association of Stratigraphic Palynologists:Principles and Applications. Applications (J.Jansonius and D.C.McGregor,Editors)
Vol. 2 P. 555- 574