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Releases by Roger Knowles

October 1, 1992 – February 28, 2017

Cover for Roger Knowles · 50 Plus Recent Events Which Helped Shape or Shocked the Nation (Paperback Book) (2017)

50 Plus Recent Events Which Help... (2017)

Cover for Roger Knowles · 50 Plus Recent Events Which Helped Shape or Shocked the Nation (Hardcover Book) (2017)

50 Plus Recent Events Which Help... (2017)

Cover for Roger Knowles · Nitrogen Isotope Techniques - Isotopic Techniques in Plant, Soil, and Aquatic Biology (Hardcover Book) (1992)

Nitrogen Isotope Techniques - Is... (1992)