TY - RPRT TI - A molecular dawn for biogeochemistry AU - D.R. Zak AU - C.B. Blackwood AU - M. P. Waldrop PY - 2006 DO - 10.1016/j.tree.2006.04.003 UR - https://pubs.usgs.gov/publication/70030313 ID - 70030313 ER -