000			00673nam a22002297a 4500
015			_a936
041			_a1
080			_a627.13 _bWAL
100			_aWaldorf.W.A.
100			_aSollid.E.
100			_aNewell..C.S.
245			_aThe Energy Method of Calculating natural Vibration Periods of Structures Applied to Dams
260			_aUnited States Department of the Interior, Bureau of Reclamation. _bUnited States _c1939
300			_a43p. _bCht.,Fig and Table
490			_aTechnical Memorandum _v585
650			_aEngineering
852			_a 4R-1-3
999			_c3695 _d3695