Len Thomas (Thomas, Len)

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  Free to Be Priest
  by Len Thomas
  Softcover, Spectrum Publications, ISBN 086786382X (0-86786-382-X)
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  Introduction to Distance Sampling: Estimating Abundance of Biological Populations
  by Steven Buckland, D. R. Anderson, Ken Burnham, J. L. Laake, Len Thomas
  Hardcover, Oxford University Press, ISBN 019850649X (0-19-850649-X)