Memorandum on the preservation of timber in coal mines.
APA Citation
Great Britain. Department of Scientific and Industrial Research., Groom, P. (1919). Memorandum on the preservation of timber in coal mines. [London.
MLA Citation
Great Britain. Department of Scientific and Industrial Research, and Percy Groom. Memorandum On the Preservation of Timber In Coal Mines. [London, 1919.
Warning: These citations may not always be complete (especially for serials).