TY - JOUR AU - Chesworth, Ward PY - 2010/12/01 Y2 - 2024/03/29 TI - Natural Experiments of History JF - Geoscience Canada JA - GS VL - 37 IS - 4 SE - Reviews DO - UR - https://journals.lib.unb.ca/index.php/GC/article/view/18543 SP - AB - ER -