共 17 条
[2]
FREEMAN EW, 1980, OBSTET GYNECOL, V55, P630
[4]
*NORWAY CENT BUR S, 1981, WEEKL B STAT, V11
[5]
*NORWAY CENT BUR S, 1982, WEEKL B STAT, V12
[6]
*NORWAY CENT BUR S, 1980, WEEKL B STAT, V13
[7]
SCHEIDER SM, 1976, AM J OBSTET GYNECOL, V126, P316
[8]
INDUCED ABORTIONS AND BIRTHS - TRENDS IN 7 COUNTRIES, NORWAY, 1972-1983
[J].
SCANDINAVIAN JOURNAL OF SOCIAL MEDICINE,
1986, 14 (02)
:61-66
[9]
SKJELDESTAD FE, 1986, SCAND J SOC MED