000 002860000a22001210004500
008 140223b1979 xxu||||| |||| 00| 0 eng d
041 _aEnglish
100 _a:NATURE
245 _aNATURE AND RESOURCES VOL15:1979
260 _aPARIS
_bUNESCO
_c1979
650 _a
_a
906 _a:UNESCO
999 _c141968
_d141968