00887cam a22002411 4500 l 56000161 DLC 20260227111545.0 750423s1956 xx 000 0 eng l 56000161 (OCoLC)1295035 DLC NOsU DLC premarc HF5381 .U8553 United States Employment Service. Estimates of worker trait requirements for 4,000 jobs as defined in the Dictionary of occupational titles; an alphabetical index. [Washington] U.S. Dept. of Labor, Bureau of Employment Security [1956] ix, 158 p. 36 cm. Issued as attachment to Employment service program letter no. 730, Nov. 8, 1956. Vocational qualifications. Occupations United States. Worker trait requirements for 4,000 jobs. 36931 36931