00450pab a2200133 454500008004000000100002300040245011900063260000900182300001300191650003600204650001400240700002300254773003900277180718b2003   xxu||||| |||| 00| 0 eng d  aHalder, Sushil Kr.  aDifferential development and fertility behaviour in the districts of West Bengal - a search for causal explanation  c2003  ap.85-96.  aFertility - India - West Bengal  aFertility  aBhattacharya, R.N.  aIndian Journal of Regional Science