Cite
MLA Citation
Ellina Grigorieva. Methods of solving nonstandard problems. Cham : Birkhäuser, 2015. http://access.bl.uk/ark:/81055/vdc_100072106250.0x000001
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Ellina Grigorieva. Methods of solving nonstandard problems. Cham : Birkhäuser, 2015. http://access.bl.uk/ark:/81055/vdc_100072106250.0x000001