Mark R.D. Seaward (Seaward, Mark R.D.)

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  Biodeterioration of Stone Surfaces: Lichens and Biofilms As Weathering Agents of Rocks and Cultural Heritage
  by Larry St.Clair, Mark Seaward
  Hardcover, Springer, ISBN 1402028032 (1-4020-2803-2)
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  Lichenology in the British Isles, 1568-1975: A Historical and Bibliographical Survey
  by D.L. Hawrsworth, Mark R.D. Seaward
  Hardcover, Mad River Pr Inc, ISBN 0916422321 (0-916422-32-1)