=LDR 00000nam a2200000ui 4500 =001 5517 =008 250530nuuuu\\\\xx\|||||||||||||||||eng\d =082 04$a551.31 KER =100 1\$aKerfoot, Denis E. =245 10$aThermal contraction cracks in an Arctic tundra environment =852 \\$bFreeman Library$cPamphlets$h551.31 KER