TY - STD AU - Brown, J. AU - Ferrians Jr, O. J. AU - Heginbottom, J. A. AU - Melnikov, E. S. PY - 2002 DA - 2002// TI - Circum-Arctic Map of Permafrost and Ground-Ice Conditions. Version 2. [indicate subset used] PB - National Snow and Ice Data Center CY - Boulder, Colorado USA ID - Brown2002 ER -