TY  - RPRT
TI  - Production costs: labor-saving equipment vs. non-machine methods.
AU  - G M Montag
AU  - M M McKinley
AU  - A C Kleinschmidt
PY  - 1967
UR  - https://pubmed.ncbi.nlm.nih.gov/6047943/
ID  - 6047943
ER  -