00000nam 2200000 4500 $a 1 Aksi Sosial 62 halaman ilus 21,5 cm The Institute of Economic Affairs USA 1969 $a INLIS000000000020812 Systems Analysis in Social Policy a critical review Ida R. Hoos Ida R. Hoos 361 Ida S 361.2 0010-1125000011 $a 251120################g##########0#eng## $a 20251120110731