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Stratospheric Ozone Reduction, Solar Ultraviolet Radiation and Plant Life / Edited by Robert C. Worrest, Martyn M. Caldwell.
- 581
- Springer-Verlag,
- 1986.
- Berlin :
-
Automating Instructional Design: Computer-Based Development and Delivery Tools / Edited by Robert D. Tennyson.
- 371.3'078
- Springer-Verlag,
- 1995.
- Berlin :