00327nam a2200121 a 4500008004100000050001400041100001400055245002000069246003800089260004800127300002100175350000900196120416s1989    ||||||||||||||||| ||    u  aQE 36 Bol  aBolton, T10aGeological maps  atheir solution and interpretation  aCambridgebCambridge University Pressc1989  avii, 144p. : ill  a0.00