Author:

Downie,C.;Williams,G.L.;Sarjeant,W.A.S.

Year:

1961

Title:

Classification of Fosil microplankton.

Reference:

Downie,C. et al. (1961) Classification of Fosil microplankton. Nature Vol. 192 # 4801 P. 471- 471

Google Academy:

try to search by title in english