Early Human Development
Early Human Development > 1998 > 50 > 2 > 149-157
Early Human Development > 1998 > 50 > 2 > 175-183
Early Human Development > 1998 > 50 > 2 > 159-173
Early Human Development > 1998 > 50 > 2 > 193-207
Early Human Development > 1998 > 50 > 2 > 233-245
Early Human Development > 1998 > 50 > 2 > 185-192
Early Human Development > 1998 > 50 > 2 > 209-217