000 00693nam a2200217 a 4500
005 20210219160117.0
008 080804s1977 mx r 000 0 spa d
020 _a923101482.
035 _aUPN01000158864
049 _aUNE
080 _a572.001. 5 (100) =20HUM No.3.
245 0 0 _aHuman population problems in the biosphere :
_bsome research strategies and designs /
_cby Paul Baker ... [et al.].
260 _aParís :
_bUNESCO,
_c1977.
300 _a82 p. :
_bil., map.
440 0 _aMAB technical notes ;
_v3
690 _aProblemas demográficos - Biología humana
690 _aMedio humano - Montañas
700 1 _aBaker, Paul,
_ecoaut.
710 2 _aUNESCO
905 _aUNESCO
999 _c130978
_d130978