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Abstract
A two-stage sample of airphoto prints and point sampling was
used to examine changes in land use patterns in 53 selected
counties that had grown rapidly and substantially in population
between 1960 and 1970. Point sampling, 20 points per square
mile, was used on a sample of airphoto prints approximating 15
percent of the land area to study 12 categories of rural and
urban land use. This approach evolved from experience with different
scales of photos, areal samples of photos, random
traverses, and point sampling in varying combination. This technique,
an inexpensive one, resulted in data that satisfactorily
correlated with comparable data from other sources and provided
detail on the dynamics of land use change.