<div class="description">
<dl><dd>[58] leaves : 21 cm (4to)</dd>
<dd>Caption title (from incipit, leaf 1&lt;2&gt; recto)</dd>
<dd>Imprint from Goff</dd>
<dd>Colophon (leaf 7&lt;10&gt; verso) reads: Impressum est hoc opusculum mira arte &amp; diligentia Erhardi Ratdolt Augustensis. Anno salutifere̜ incarnationis, 1485</dd>
<dd>Signatures: 1-6⁸ 7¹⁰</dd>
<dd>Leaves printed on both sides; 32-33 lines per page</dd>
<dd>Large woodcut of armillary sphere as frontispiece (leaf 1&lt;1&gt; verso); initials</dd>
<dd>Seven of the diagrams in Purbachius printed in colours (red, black, yellow, and brown)</dd></dl><br>Subjects: Gherardo, da Sabbioneta, active 13th century. Theorica planetarum; Astronomy -- Early works to 1800; Astronomy</div>
<div class="fn value">
Sacro Bosco, Joannes de, active 1230 author</div>
Internet Archive identifier