438
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439
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440
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441
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442
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443
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444
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445
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446
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447
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448
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449
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450
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451
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452
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453
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454
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455
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456
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457
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458
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459
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460
Baringa 1991; Ezzel 1991; LeVay 1991.
461
Allen and Gorski 1992; Byne and Parsons 1993; Byne 1994.
462
Swaab and Hofman 1990.
463
Bancroft 1980.
464
Adkins-Regan 1988; Byne and Parsons 1993; Byne 1994; Byne in press.
465
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466
Nadler 1990.
467
Smuts and Wantanabe 1990.
468
Kano 1992.
469
Carpenter 1942; Chevalier-Skolnikoff 1976; Mers and Conaway 1979; Wolfe 1979; Wolfe 1984; Wolfe 1986; Sommer 1988; Srivastava et al. 1991; Kano 1992.