00491nam a22001097a 4500008004100000040005500041080002900096245019200125260003200317300001900349650001300368230622b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a627.502.55(082.2)+40bL6  aFundamental tools to be used in environmental problems: bAbstracts resumes analytiquesc/ XVIth Congress of the International Association for Hydraulic Research 27 July to 1 August, 1975  aBrasil: bSao Paulo, c1976  axxxviii, 259p.  aResearch