"The Ice Ages. NSA. © Howard Falcon-Lang. Talk outline. Part 1: How was the Ice
Age first discovered? Investigation: Beetles as evidence of past climate."
http://www.earth4567.com/talks/ice/iceLect.ppt
"The Ice Ages. NSA. © Howard Falcon-Lang. Talk outline. Part 1: How was the Ice
Age first discovered? Investigation: Beetles as evidence of past climate."
http://www.earth4567.com/talks/ice/iceLect.ppt
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