00305nam a2200133Ia 4500008004000000041000800040082001100048100001100059245002700070260003200097650001700129650001400146700001100160210210b1912 xxu||||| |||| 00| 0 eng d aeng a512/54 aPLAYNE aPractical trigonometry aLondonbEdward Arnoldc1912 atrigonometry aPractical aFAWDRY