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Table representation of search results timeline featuring number of search results per year.
Year
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1938
2
1939
1
1942
1
1945
66
1946
250
1947
208
1948
213
1949
243
1950
425
1951
442
1952
461
1953
472
1954
508
1955
535
1956
518
1957
516
1958
484
1959
546
1960
549
1961
559
1962
713
1963
917
1964
1197
1965
1036
1966
870
1967
1254
1968
1648
1969
1591
1970
1726
1971
1979
1972
2132
1973
2333
1974
2491
1975
2506
1976
2373
1977
2399
1978
2682
1979
2980
1980
2798
1981
3021
1982
3097
1983
3304
1984
3326
1985
3591
1986
3563
1987
3594
1988
3993
1989
4227
1990
4363
1991
4591
1992
4656
1993
4796
1994
4857
1995
4778
1996
4702
1997
5010
1998
4985
1999
5380
2000
5673
2001
5780
2002
5968
2003
6721
2004
7250
2005
8152
2006
8644
2007
9459
2008
10330
2009
11002
2010
12161
2011
12318
2012
13348
2013
14383
2014
15279
2015
15933
2016
15736
2017
16237
2018
16867
2019
17387
2020
18311
2021
18141
2022
16517
2023
13918
2024
6490
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Page 1
Development in the family.
Parke RD.
Parke RD.
Annu Rev Psychol. 2004;55:365-99. doi: 10.1146/annurev.psych.55.090902.141528.
Annu Rev Psychol. 2004.
PMID: 14744220
Review.
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Single-parent adoptions.
Russell DH, Rosenberg AH.
Russell DH, et al.
N Engl J Med. 1968 Aug 1;279(5):259-60. doi: 10.1056/NEJM196808012790506.
N Engl J Med. 1968.
PMID: 5662778
No abstract available.
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