00681cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040003900111042001200150050002200162100003500184245005500219260002300274300003900297410004600336504002400382650003200406650001300438gs 64000284 DLC20260227111414.0821014s1964    dcua     b   f000 0 eng c  ags 64000284   a(OCoLC)8859550  aU.S. Geol. Survey Libr.cMsSMdDLC  apremarc00aQE75b.C5 no. 4851 aScheidegger, Adrian E.,d1925-10aLithologic variations in slope development theory.  aWashington,c1964.  aiii, 8 p.bdiagrs., tables.c26cm.20aGeological Survey (U.S.).tCircular,v485  aBibliography: p. 8. 0aSlopes (Physical geography) 0aErosion.