00590nam a22002177a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102110001100118245005600129260002700185300002300212490004300235650001600278650003500294830004300329CHAP20220817042502.0971013s1942            r     00010     d  a46014  a46986  a51127  cCHAP  a551.49bU52  aUNESCO  aStatus and trends of research in hydrology, 1965-74  aParis :bUNESCO,c1942  a148 p.b; gráfs.  aStudies and reports in hydrologyv; 1014aEstática.14aHidrologíaxInvestigación.0 aStudies and reports in hydrologyv; 10