https://sabr.org/wp-content/uploads/2017/12/FrenchJim.jpeg399285admin/wp-content/uploads/2020/02/sabr_logo.pngadmin2017-12-02 12:31:362023-01-13 16:53:07Jim French (1991)
https://sabr.org/wp-content/uploads/2021/05/logo_SABR_250.png250250admin/wp-content/uploads/2020/02/sabr_logo.pngadmin2017-12-02 12:31:362023-01-13 16:53:56Gene Freese and Carl Erskine (1990)