1. Petrographic variation due to depositional setting of the Lower Kittanning seam, western Pennsylvania;Allshouse,1984
2. Lycopod succession in coals: an example from the low Barnsley Seam (Westphalian B), Yorkshire, England;Bartram,1987
3. Forehand basins;Beaumont;Geophys. J. R. Astron. Soc.,1981
4. The Pictou Coalfield, Nova Scotia;Bell;Geol. Surv. Can. Mem.,1940
5. Carboniferous rocks and fossil flora of northern Nova Scotia;Bell;Geol. Surv. Can. Mem.,1944