- 7 9 , ▁she ▁worked ▁in ▁Cambridge ' s ▁Centre ▁of ▁South ▁Asian ▁Studies ▁with ▁a ▁mult id is cipl inary ▁international ▁team ▁led ▁by ▁Far mer ▁and ▁Robert ▁Ch amb ers ▁comparing ▁the ▁Green ▁Revolution ▁in ▁rice ▁in ▁South ▁India ▁and ▁Sri ▁L anka . ▁Ar med ▁with ▁an ▁American ▁Land - gr ant ▁university ▁approach ▁to ▁agricult ural ▁econom ics , ▁Harr iss - White ' s ▁ 1 9 7 2 - 7 4 ▁field work ▁on ▁gra in ▁mer ch ants ▁and ▁m one yl enders ▁generated ▁a ▁critical ▁eng agement ▁with ▁agricult ural ▁econom ics ▁and ▁a ▁turn ▁to ▁political ▁economy . ▁ ▁From ▁then ▁on , ▁in ▁long - term ▁field ▁studies ▁of ▁rural ▁mark ets ▁in ▁South ▁India ▁as ▁they ▁evol ved ▁over ▁ 4 5 ▁years , ▁in ▁North ▁India ▁over ▁ 2 5 ▁years , ▁and ▁in ▁br ie fer ▁sp ells ▁in ▁Franc oph one ▁West ▁Africa , ▁in ▁Bang l adesh ▁and ▁the ▁H imal ay an ▁border ▁state ▁of ▁Ar un ach al , ▁she ▁developed ▁and ▁applied ▁a ▁framework ▁through ▁which ▁to ▁un pack ▁the ▁triple ▁role ▁of ▁rural ▁mark ets ▁in ▁development . ▁Agricult ural ▁mark ets ▁are ▁simultane ous ▁extract ors ▁of ▁resources ▁from ▁agricult ure ; ▁sites ▁of ▁explo itation ▁of ▁labour ▁and ▁produ cers ; ▁and ▁more ▁or ▁less ▁efficient ▁drivers ▁of ▁agr arian ▁transformations ▁through ▁produ cers ’ ▁responses ▁to ▁their ▁price ▁behaviour . ▁Much ▁of ▁this ▁economic ▁activity ▁is ▁not ▁registered . ▁In