Tract XXXV. Gunpowder.
Tracts on mathematical and philosophical subjects Vol. 3, GDML_Books, (1812), p. 153 / Harvested from
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@article{PPN589533266+DMDLOG_0004,
     title = {Tract XXXV. Gunpowder.},
     booktitle = {Tracts on mathematical and philosophical subjects Vol. 3},
     series = {GDML\_Books},
     publisher = {Rivington [u.a.]},
     address = {London},
     year = {1812},
     pages = {153},
     url = {http://dml.mathdoc.fr/item/PPN589533266+DMDLOG_0004}
}

 (éd.). Tract XXXV. Gunpowder., dans Tracts on mathematical and philosophical subjects Vol. 3, GDML_Books,  (1812), p. 153. http://gdmltest.u-ga.fr/item/PPN589533266+DMDLOG_0004/