Author:

Cramer,F.H.;Diez,M.D.C.R.

Year:

1979

Title:

Lower Paleozoic acritarchs.

Reference:

Cramer,F.H. et al. (1979) Lower Paleozoic acritarchs. Instituto de investigaciones palinolгgicas, Apartado # 244 P. 17- 160

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