Cite
MLA Citation
Hayk Sedrakyan and Nairi Sedrakyan. The stair-step approach in mathematics. Cham, Switzerland : Springer, 2018. http://access.bl.uk/ark:/81055/vdc_100074831280.0x000001
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Hayk Sedrakyan and Nairi Sedrakyan. The stair-step approach in mathematics. Cham, Switzerland : Springer, 2018. http://access.bl.uk/ark:/81055/vdc_100074831280.0x000001