FEATURES OF BUILDING ROADS IN PERMA-FROZEN GROUNG REGIONS Open PDF Document Details Document Type Technical Report Publication Date Dec 14, 1962 Accession Number AD0295432 Entities People N. Puzakov Organizations National Air and Space Intelligence Center Tags DTIC Thesaurus Topics Aerial Photography Automobiles Construction Embankments Engineering Foreign Technology Freezing Government Procurement Governments Humidity Materials Photography Saturated Soils Soils Standards Surface Waters Water