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pit lignite mining Topics by Science.gov

Methodology of selecting dozers for lignite open pit mines in Serbia. SciTech Connect. Stojanovic, D.; Ignjatovic, D.; Kovacevic, S. 1996-12-31. Apart from the main production processes (coal and overburden mining, rail conveyors transportation and storage of excavated masses) performed by great-capacity mechanization at open pit mines, numerous and different auxiliary works, that often have

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L'esprit des pierres

[collectif] (1967). Nubie (Cahiers d'histoire égyptienne, t. 10). Le Caire, 224 p. (1788). [Iron-stone rock in various stages being formed by natural processes of heat and cold]. 1 print engraving,.

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() Neoselachians from the Upper Campanian and Lower

Bulk sampling of upper Campanian to lower middle Maastrichtian coastal and lagoonal deposits in five sections of the Tremp Formation in the south-central Pyrenees yielded numerous neoselachian

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2017 in mammal paleontology Wikipedia

Eutherians Research. A study on the timing of the diversification of placental mammals based on genomic data, indicating that the placentals underwent a continuous radiation across the CretaceousPaleogene boundary without apparent interruption by the CretaceousPaleogene extinction event, is published by Liu et al. (2017).; A study on the completeness of the eutherian fossil record

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