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Science Earth Sciences 

Make a copy [2014] akabilly1 (Earth Science-Colfax): Scoria

[2014] akabilly1 (Earth Science-Colfax): Scoria by MrsVerdi

Science Earth Sciences 

Make a copy [2014] Clayton Cheng: Paricutin

[2014] Clayton Cheng: Paricutin by GeGe2112