Biblioteca Digital

3 resultados para Underground coal

em Biodiversity Heritage Library, United States

A monograph of the fossil insects of the British coal measures / by Herbert Bolton.

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v.1 (1921)

A monograph of the fossil insects of the British coal measures / by Herbert Bolton.

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v.2 (1922)

A forest of the coal age / by B. E. Dahlgren, Acting Curator, Dept. of Botany.

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no.14(1933)