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mechanics and applied calculus:mathematics/science/technolo: unit 9 equilibrium and stability/ - 1 ed. - uk : open university 1972. - ", 45p.; 29 cm."
620. 103 uni
mechanics and applied calculus:mathematics/science/technolo: unit 9 equilibrium and stability/ - 1 ed. - uk : open university 1972. - ", 45p.; 29 cm."
620. 103 uni