TY - BOOK ID - 129184498 TI - Aerial photographs : their use and interpretation PY - 1942 PB - New York : Harper, DB - UniCat KW - Aerial photography. KW - Environmental Sciences and Forestry. Geology -- Geology (General) UR - https://www.unicat.be/uniCat?func=search&query=sysid:129184498 AB - ER -