TY - BOOK TI - Symposiam on land subsidence, Tokyo, 1969/09, Land subsidence: proceedings of the Tokyo sumposium, September1969. U1 - 551.3 PY - 1970/// CY - Belgium PB - International Association of Scientific Hydrology KW - Earth Sciences N1 - Symposiam on land subsidence, Tokyo, 1969/09, Land subsidence : proceedings of the Tokyo sumposium, September1969 ER -