Versions of 16 USC 543d - Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports on LawServer 2024 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2023 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2022 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2021 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2020 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2018 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2017 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2015 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2014 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2013 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2012 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports 2010 16 USC 543d – Ecological studies; reports to Congressional committees and to Chief of Forest Service; progress reports