LDR 00439nam a2200133zu 4500 008 090205n chi d 100 1 _aYu Guangyuan 245 _aOn Rational and Maximum Land Utilization _cYu Guangyuan 504 _aübs. aus: Zhongguo Shehui Kexue, No.1, 1984 773 0 _tSocial Sciences in China _gVol. 5.1 (1984); p. 70-78" 946 _a 001 IFS32647 999 _c304269 _d304269 952 _70 _c1 _40 _00 _9168935 _yBOOK _10 _d2009-05-14 _aIFS