| 摘要 |
PCT No. PCT/AT83/00011 Sec. 371 Date Dec. 12, 1983 Sec. 102(e) Date Dec. 12, 1983 PCT Filed Apr. 22, 1983 PCT Pub. No. WO83/03799 PCT Pub. Date Nov. 10, 1983.Printed matter consists of folded sheets (1) of paper, each of which has a crease (2) and a prepared fold line (3), which is associated with and parallel to that crease (2) and permits of a backfolding in order to facilitate the manipulation.
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