Environmental History of Landscapes and Watersheds from the San Juan Mountains to the Grand Canyon

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• Deprecated function: Return type of DateObject::setTimezone($tz, $force = false) should either be compatible with DateTime::setTimezone(DateTimeZone $timezone): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 158 of /var/www/drupal/sites7/cals.arizona.edu.research.frel/modules/date/date_api/date_api.module).