Costello, Christopher M. Drake, John Lodge, David M. Appendix A. Shipping traffic (number of vessels) in the Great Lakes from 1959 to 2000. Shipping traffic (number of vessels) in the Great Lakes from 1959 to 2000. nonindigenous species;ballast water;environmental policy;invasive species;NIS;maximum likelihood;Environmental Science;Ecology 2016-08-04
    https://wiley.figshare.com/articles/dataset/Appendix_A_Shipping_traffic_number_of_vessels_in_the_Great_Lakes_from_1959_to_2000_/3512906
10.6084/m9.figshare.3512906.v1