R. P. Marii Bettini ... Recreationum mathematicarum apiaria novissima duodecim; quae continent militaria, stereometrica, conica, & novas alias jucundas praxes ac theorias, in omni mathematicarum scientiarum genere. Accessit coronidis loco appendix hujus operis pars praecipua, in qua sunt defensiones contra oppositiones Novalmagesti. Ope, ac opera Aquilonaris academiae
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![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](/img/cover/10200621-M.jpg)
