Venkatachala B, Bharadwaj D. Sporological study of the coals from Falkenberg (Faulouemont) colliery, Lothringen (Lorrain), France. JPS [Internet]. 1962 Dec. 31 [cited 2024 Jul. 18];11((1-3):159-207. Available from: https://jpsonline.co.in/index.php/jop/article/view/637