00980cam a22002891  4500001001300000003000400013005001700017008004100034010001700075035001900092040004000111042001200151043001200163050002200175100003100197245008700228260003400315300005100349410004600400500011500446504002400561650001400585650001400599650002500613740003500638999001700673gs 63000247 DLC20260227111412.0821018s1962    dcuab    b   f000 0 eng c  ags 63000247   a(OCoLC)8870868  aU.S. Geol. Survey. Libr.cMsSMdDLC  apremarc  an-us-nd00aQE75b.C5 no. 4721 aShjeflo, Jelmer B.,d1911-10aCurrent studies of the hydrology of prairie potholes,cby J.B. Shjeflo and others.  aWashington,c1962 [i.e. 1963]  aiii, 11 p.billus., map, diagr., table.c26cm.20aGeological Survey (U.S.).tCircular,v472  a"Prepared as part of a program of the Department of the Interior for development of the Missouri River basin."  aBibliography: p. 11 0aPotholes. 0aPrairies. 0aLakeszNorth Dakota.0 aHydrology of prairie potholes.  c29725d29725