TY  - RPRT
TI  - Letter: Holiday effects upon natality.
AU  - L B Borst
AU  - M Osley
PY  - 1975
DO  - 10.1016/0002-9378(75)90737-1
UR  - https://pubmed.ncbi.nlm.nih.gov/1146939/
ID  - 1146939
ER  -