Author:

Poort,R.J.;Clement-Westerhof,J.A.;Looy,C.V.;Visscher,H.

Year:

1997

Title:

Aspects of Permian palaeobotany and palynology XVII: Conifer extinction in Europe at the Permian-Triassic Junction: Morpholo ultrastructure and geographic/Stratigraphic distribution of Nuskoisporites dulhuntyi (Prepollen of Ortiseia, Walchiaceae)

Reference:

Poort,R.J. et al. (1997) Aspects of Permian palaeobotany and palynology XVII: Conifer extinction in Europe at the Permian-Triassic Junction: Morpholo ultrastructure and geographic/Stratigraphic distribution of Nuskoisporites dulhuntyi (Prepollen of Ortiseia, Walchiaceae) Review of Palaeobotany and Palynology Vol. 97 # 1 P. 9- 39

Google Academy:

try to search by title in english