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- ==Geology== [[Category:Geology]] ...3 KB (427 words) - 19:05, 27 March 2017
- * C K Wentworth, A scale of grade and class terms for clastic sediments, J. Geology V. 30, 377-392 (1922). [[Category:Geology]] ...3 KB (345 words) - 00:43, 23 February 2017
- ...iron. The limestone forms a [[substance]] called [[slag]] with the [[Rock (geology)|rock]] of the iron ore. ...5 KB (865 words) - 13:19, 6 April 2017
- He also turned his attention to [[geology]] (the origin of [[ice age]]s), [[astronomy]], [[physical cosmology]], and ...9 KB (1,332 words) - 16:42, 31 August 2017
- Suppose someone wants to build two [[tower]]s, by stacking [[Rock (geology)|rocks]] of different [[mass]]. One wants to make sure that each of the tow ...15 KB (2,427 words) - 22:24, 16 August 2017