00382nam a2200121 a 450000500170000000800410001705000200005810000220007824500670010026000350016744000330020265000250023520140414131852.0100802s19uu    xx            00    eng d  aM 623bC13 2004  aCalkhoven, Laurie  aFlash, boom, blast! :bamazing inventions from the war front!.  aNew York :bScholastic,c2004.  aThe History Channel Presents  aMilitary engineering