TY - RPRT TI - Recognition map analysis and crop acreage estimation AU - Manderscheid, L. V. AU - Erickson, J. D. AU - Nalepka, R. F. AU - Morgenstern, J. P. PY - 1975 UR - https://ntrs.nasa.gov/citations/19750021449 ID - 19750021449 ER -