TY - RPRT TI - Observations on Tripartiella bursiformis, Trichodina nigra and a pathogenic trichodinid, Trichodina fultoni AU - G. L. Hoffman AU - J. Lom PY - 1967 DO - 10.7589/0090-3558-3.4.156 UR - https://pubs.usgs.gov/publication/1014290 ID - 1014290 ER -