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From Wikipedia, the free encyclopedia
<
User:Isochrone
Main sandbox
Sandpit 1
Sandpit 2
Sandpit 3
Sandpit 4
Sandpit 5
Sandpit 6
Sandpit 7
https://www-icevirtuallibrary-com.wikipedialibrary.idm.oclc.org/doi/abs/10.1680/iicep.1968.8107
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