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Created page with 'File:lighterstill.jpgright|frame Lessons on the topic of '''''Catastrophism'''''. Category: Topics'
[[File:lighterstill.jpg]][[File:Orbital_degradation_model.jpg|right|frame]]
Lessons on the [[topic]] of '''''[[Catastrophism]]'''''.
[[Category: Topics]]
Lessons on the [[topic]] of '''''[[Catastrophism]]'''''.
[[Category: Topics]]