00511nam a22001457a 4500020001500000082001300015100002300028245010600051250000800157260007100165300001000236490003600246500006000282654002300342  a8187621990  a300bPAD  aPadmalal, D et al.  aTile and brick clay mining and related environmental problems in the Chalakudy basin, central Kerala   aNil  aThiruvananthapuram , KeralabCentre for development studies c2004  a122p.  aDiscussion paper series ; No.96  aKerala Research on programme on Local level Development  aGeneral Miscellany