Published by Comptes Rendus de l'Academie des Sciences, Paris., 1958
Seller: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condition: Good. ORIGINAL 1958 Reprint/Offprint/Extrait of journal article; no covers; light creasing of center of leaves where folded, o/w in good condition. Journal.
Published by Societe Geologique du Nord., 1987
Seller: Eryops Books, Stephenville, TX, U.S.A.
No Binding. Condition: Good. ORIGINAL 1987 Reprint/Offprint/Extrait; in French, with English abstract; no covers issued; light creasing of corners of leaves; small light stain on lower corner; o/w in good condition. Journal.
1988, Madrid, Revista Investigacion y Ciencia, Edicion Española de Scientific American, 8 paginas, ilustraciones, 30x22, cubierta original, buen estado.