FROST INVESTIGATION 1944-1945. APPENDIX 11. REPORT ON SUBSURFACE TEMPERATURE INVESTIGATIONS AT PIERRE AIRFIELD, PIERRE, SOUTH DAKOTA, WATERTOWN AIRFIELD, WATERTOWN, SOUTH DAKOTA, FARGO MUNICIPAL AIRFIELD, FARGO, NORTH DAKOTA. APPENDIX 12. REPORT ON SUBSURFACE TEMPERATURE INVESTIGATIONS AT DOW FIELD, BANGOR, MAINE, PRESQUE ISLE AIRFIELD, PRESQUE ISLE, MAINE.
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