TY - GEN AU - Ivie,Evan Leon TI - Search procedures bases on measures of relatedness between documents U1 - 621.3 PY - 1966/// CY - Massachusetts PB - Institute of Technology KW - INGENIERÍA ELÉCTRICA N1 - Submitted in parcial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology. May, 1966 ER -