TY  - RPRT
TI  - Physical work load and gestational age at delivery.
AU  - A P Koemeester
AU  - J P Broersen
AU  - P E Treffers
PY  - 1995
DO  - 10.1136/oem.52.5.313
UR  - https://pubmed.ncbi.nlm.nih.gov/7795752/
ID  - 7795752
ER  -