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- [2] A COMPUTER PROGRAM FOR PRINCIPAL COMPONENTS ANALYSIS OF LEARNING DATA BEHAVIORAL SCIENCE, 1970, 15 (02): : 206 - &
- [4] AN ANALYSIS OF PRINCIPAL COMPONENTS TO DETERMINE A MORE ECONOMICAL SAMPLING PROGRAM FOR INFILTRATION AND ASSOCIATED EDAPHIC VARIABLES TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1970, 51 (04): : 291 - &