GRAVITATION, *E.191 230 La Faille, Jean Charles de, 1597-1662.
Theoremata de centro gravitatis partivm cirevli et ellipsis. Antwerp, Jan de Meurs, 1632.
4 pele, 53, [2] pe» diagrs. 26 cm.
Bound with Ghetaldi, Marino. De resolv- tione & compositione mathematica libri avin- qvee Romae, 1630. 33 ome
T.-f. vignette engraved after Rubens.
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