Matches in Library of Congress for { ?s ?p Subject headings Programmed instruction.. }
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- 68001076 subject "Subject headings Programmed instruction.".
- 73079899 subject "Subject headings Programmed instruction.".
- 74189595 subject "Subject headings Programmed instruction.".
- 77013479 subject "Subject headings Programmed instruction.".
- 80023719 subject "Subject headings Programmed instruction.".