A longitudinal research in child development and some of its problems
- PMID: 13209062
- PMCID: PMC2079997
- DOI: 10.1136/bmj.2.4897.1132
A longitudinal research in child development and some of its problems
References
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- Br Med J. 1952 Dec 6;2(4796):1240-1 - PubMed
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