摘要 |
<p>The album has a rear part (4) with three parts (4a, 4b, 4c) made of fixed and rigid materials, and connected together with a flexible material (6) e.g. linen, plastic or leather. The exterior parts are provided with holes. Upper and lower covers made of the fixed and rigid material are connected with the flexible materials having a strap. The strap is connected with the cover, whose holes are mounted congruent with the holes of the parts.</p> |