| 摘要 |
PCT No. PCT/GB90/01623 Sec. 371 Date Apr. 1, 1992 Sec. 102(e) Date Apr. 1, 1992 PCT Filed Oct. 23, 1990 PCT Pub. No. WO91/05982 PCT Pub. Date May 2, 1991.A shot-gun cartridge includes a main wad which is biodegradable. The wad is preferably formed from a composition including synthetic resin natural starch and chemically active prodegradents.
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