TY - BOOK ID - 129041369 TI - Plot size and variability AU - Boon, D. A. AU - International institute for aerial survey and earth sciences (ITC) PY - 1963 PB - Delft : ITC, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:129041369 AB - ER -