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The Jepson Manual
by Baldwin, Bruce G.; Goldman, Douglas H.; Keil, David J.; et al.
ISBN: 9780520253124
Copyright:
Hardcover
What Heals and Why? Children's Understanding ...
by Lockhart, Kristi L.; Keil, Frank C.; Rosengren, Karl S.; et al.
ISBN: 9781119523567
Paperback
California Vegetation
by Holland, V. L.; Keil, David J.
ISBN: 9780787226855