Cite
HARVARD Citation
Unknown (2012) The humongous book of trigonometry problems : translated for people who don't speak math. [Online]. New York : Alpha Books. Available from: http://access.bl.uk/ark:/81055/vdc_100039870312.0x000001
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Unknown (2012) The humongous book of trigonometry problems : translated for people who don't speak math. [Online]. New York : Alpha Books. Available from: http://access.bl.uk/ark:/81055/vdc_100039870312.0x000001