01005cam a22002771  4500001001300000003000400013005001700017008004100034010001700075025001800092035001900110040002500129042001200154050001900166111009700185245010100282260006100383300005600444500006400500504002900564650003500593650003000628650001300658710004400671710001200715sa 63001679 DLC20260227111929.0810629s1960    pk ab    b   f100 0 eng    asa 63001679   aPL480:P-E-18x  a(OCoLC)7539529  aDLCcMnSUdMnSUdDLC  apremarc00aS622b.S9 19572 aSymposium on Soil Erosion and its Control in the Arid and Semi-arid Zonesd(1957 :cKarachi)10aSoil erosion and its control in arid and semi-arid zones;bproceedings of the Karachi symposium.  aKarachi,bFood and Agriculture Council, Pakistan,c1960.  axxi, 400 p.billus., maps, diagrs., tables.c24 cm.  a"Held ... under the joint auspices of F.A.C.P. and UNESCO."  aIncludes bibliographies. 0aSoil conservationvCongresses. 0aArid regionsvCongresses. 0aErosion.2 aFood and Agriculture Council (Pakistan)2 aUnesco.