TY - BOOK AU - Duggin,M.J. ED - Commonwealth Scientific and Industrial Organization. ED - Symposium on the Remote Sensing of the Environment TI - On the natural limitations of target differentiation by means od spectral discrimination techniques PY - 1974/// CY - North Ryde, N.S.W. PB - CSIRO KW - Remote sensing KW - Prospecting KW - Geophysical methods KW - Mathematical models N1 - Paper presented at the 9th Symposium on the Remote Sensing of the Environment, Ann Arbor, Michigan, April, 1974 ER -