| 1. 
  |  | Title: Logic Programming in Action: Second International Logic Programming Summer School, Lpss '92 Zurich, Switzerland, September 7-11, 1992: Proceedings by G. Comyn, N.E. Fuchs, M.J. Ratcliffe
 ISBN: 0387559302
 Publisher: Springer Verlag
 Pub. Date: December, 1992
 List Price: $69.95
 Amazon.com Price: $69.95
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| 2. 
  |  | Title: British Plant Communities: Volume 5, Maritime Communities and Vegetation of Open Habitats by J. S. Rodwell, C. D. Pigott, D. A. Ratcliffe, A. J. C. Malloch, H. J. B. Birks, M. C. F. Proctor
 ISBN: 0521391679
 Publisher: Cambridge University Press
 Pub. Date: 16 March, 2000
 List Price: $170.00
 Amazon.com Price: $170.00
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| 3. 
  |  | Title: Lead in Man and the Environment by J. M. Ratcliffe
 ISBN: 0470271841
 Publisher: Halsted Press
 Pub. Date: July, 1981
 List Price: $96.95
 Amazon.com Price: $96.95
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| 4. 
  |  | Title: Logic Programming in Action (Lecture Notes in Artificial Intelligence) by G. Comyn, N.E. Fuchs, M.J. Ratcliffe
 ISBN: 3540559302
 Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
 Pub. Date: 01 August, 1992
 
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