Author:

Gradstein,F.M.

Year:

1971

Title:

The age of Beds in the Lettenkohle facies in South-East France (A palynological approach)

Reference:

Gradstein,F.M. (1971) The age of Beds in the Lettenkohle facies in South-East France (A palynological approach) Pollen et Spores Vol. 13 # 1 P. 169- 178

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