TY - RPRT TI - Geochemical and mineralogical properties of Boquillas Shale geochemical reference material ShBOQ-1 AU - Justin E. Birdwell AU - Stephen A. Wilson PY - 2021 DO - 10.3133/fs20213048 UR - https://pubs.usgs.gov/publication/fs20213048 ID - fs20213048 ER -