| Literature DB >> 5493578 |
J Nielsen, S Bjarnason, U Friedrich, A Froland, V H Hansen, A Sorensen.
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Year: 1970 PMID: 5493578 DOI: 10.1111/j.1469-7610.1970.tb01016.x
Source DB: PubMed Journal: J Child Psychol Psychiatry ISSN: 0021-9630 Impact factor: 8.982