000 01484nam a2200301 a 4500
001 INP
003 CY-NiGSD
005 20201204062629.0
008 110316s1999 us bf ||| |engd
040 _beng
_dΒιβλιοθήκη Τμήματος Γεωλογικής Επισκόπησης
_aCY-NiGSD
082 7 _a363.738
_221st ed.
100 1 _aKelly, Valerie J.
_4aut
_9134063
245 1 0 _aSources and transport of phosphorus and nitrogen during low-flow conditions in the Tualatin River, Oregon, 1991-93 /
_cby Valerie J. Kelly, Dennis D. Lynch and Stewart A. Rounds.
260 _a[Reston, Virginia]:
_b[U. S. Geological Survey],
_b[U. S. Department of the Interior]
_c[1999].
300 _avii, 94 p. :
_bmaps, tables ;
_c28 cm.
490 0 _a;
_v2465
500 _aPrepared in cooperation with Unified Sewerage Agency of Washington County.
504 _aIncludes bibliographical references (p. 74).
650 4 _aWater quality
_zOregon
_zTualatin River
_9138167
650 4 _aPhosphorus
_xEnvironmental aspects
_zOregon
_zTualatin River
_9136015
650 4 _aNitrogen
_xEnvironmental aspects
_zOregon
_zTualatin River
_9135346
700 1 _aLynch, Dennis D.
_4asn
_9134486
700 1 _aRounds, Stewart
_4asn
_9136624
710 0 _aUnited States
_bGeological Survey
_4pbl
_9137805
710 2 0 _aUnited States.
_bDepartment of the Interior
_4pbl
_9137798
911 _a001297
_e20110316
_j1999
_n363.738 KEL
_p1
_q21
_r0
_s0
942 _2ddc
_cBK
_h363.738 KEL
999 _c77064
_d77064