00696cam a22002171i 4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111050002200132100002200154245006000176260004300236300002200279490004100301500005000342500006900392999001700461gs 20000061 DLC20260227111324.0800221s1920    dcu          f000 0 eng    ags 20000061   a(OCoLC)6006359  aDLCcICharEdDLC00aQE75b.B9 no. 7051 aLane, Franklin K.10aConservation through engineering,cby Franklin K. Lane.  aWashington,bGovt. Print. Off.,c1920.  aiv, 35 p.c24 cm.0 aU.S. Geological survey. Bulletin 705  aAt head of title: Department of the interior.  aExtract from the Annual report of the secretary of the interior.  c25987d25987