Instructors may benefit from a preview of some of the changes implemented for this fifth edition. first, we have revised the material pertaining to aerial photography to recognize the transition from analog to digital systems. Although within the realm of commercial practice, this transition has been under way for decades, it has not been fully reco…
. The synoptic view afforded by orbiting earth sensors can be' extremely valuable for resource evaluation, environmental monitoring and development planning. For many regions of the world, however, cloud cover has prevented the acquisition of remotely sensed data during the most environmentally stressed periods of t…