000 003110000a22001210004500
245 _aGeneral system theory : foundations developments applications
100 _aBertalanffy, Ludwig Von
260 _aHarmondsworth
_bPenguin
_c1973
300 _a311 p.
080 _a007
_bB4
041 _aEN
942 _cBK
999 _c102427
_d102427