Cite
MLA Citation
British Standards Institution,. BS EN 15947-4. Pyrotechnic articles. Fireworks, Categories F1, F2 and F3.. London : British Standards Institution, 2020. http://access.bl.uk/ark:/81055/vdc_100105486316.0x000001
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British Standards Institution,. BS EN 15947-4. Pyrotechnic articles. Fireworks, Categories F1, F2 and F3.. London : British Standards Institution, 2020. http://access.bl.uk/ark:/81055/vdc_100105486316.0x000001