00933cam a2200253   4500001001300000003000400013005001700017008004100034010001700075040003600092050002200128070002200150100002200172245010400194260008200298300002900380410006600409504003100475650001800506650002300524650004200547650004900589700004100638agr67000221 DLC20260227111026.0700130s1967    dcua     b    000 0 eng c  aagr67000221   aU.S. Nat'l Agr. Libr.cDLCdDLC10aS900b.U5 no. 1310 aA56.9 R31 no. 1311 aArmbrust, Dean V.10aDesign and operation of a portable soil-blowing wind tunnelc[by Dean V. Armbrust and James E. Box.  aWashington]bAgricultural Research Service, U.S. Dept. of Agriculture,c1967.  ai, 14 p.billus.c26 cm.10a[United States.bAgricultural Research Service]tARS 41v-131  aBibliographical footnotes. 0aWind erosion. 0aSoil conservation. 3aWind erosionxPrevention and control. 3aSoil conservationxImplements and machinery.1 aBox, James E.,d1931-ejoint author.