"elrod, mcree j. "
choice of subject headings: / mcree.j. elrod - 2 ed. - usa : scarecrow 1978. - "viii, 49p.; 22 cm." - "modern library practices series,no.5" .
0-8108-1087-5
subject cataloguing-programmed instruction--subject headings-programmed instruction
Z674.E47 1978
choice of subject headings: / mcree.j. elrod - 2 ed. - usa : scarecrow 1978. - "viii, 49p.; 22 cm." - "modern library practices series,no.5" .
0-8108-1087-5
subject cataloguing-programmed instruction--subject headings-programmed instruction
Z674.E47 1978