000			00865cam a2200205 i 4500
020			_a0309029767
082	0	0	_a625.73 _bNAT
110	2		_aNational Research Council (U.S.).
245	1	0	_aControl of erosion Control de erosión=Contrôle de l'érosion / _cTransportation Research Board, Commission on Sociotechnical Systems, National Research Council.
260			_aWashington, D.C. : _bNational Academy of Sciences, _c1979.
300			_axxx, 316 p. : _bill. ; _c28 cm.
500			_a"Prepared under contract AID/OTR-C-1591, project 931-1116, U.S. Agency for International Development."
500			_aEnglish, French, and Spanish.
500			_aIncludes index.
650		0	_aRoads _zDeveloping countries _xMaintenance and repair.
650		0	_aRoad drainage _zDeveloping countries.
650		0	_aSoil erosion _zDeveloping countries.
650		0	_aMCE
942			_cBK
999			_c7818 _d7818