HUBUNGAN PARTISIPASI SUAMI DENGAN KB RASIONAL ISTRI DI KELURAHAN BULUSAN KECAMATAN TEMBALANG KOTA SEMARANG TAHUN 2004 THE ASSOCIATION BETWEEN HUSBAND’S PARTICIPATION AND RATIONALITY OF WIFE’S FAMILY PLANNING AT BULUSAN VILLAGE TEMBALANG SUBDISTRICT SEMARANG CITY - DARWANTO, DARWANTO (2004)