00385nam a2200145   450000100060000000300030000600500170000900800410002603500190006703500180008605000210010410000210012524500600014626000330020621605UR20220427165301.0061103|||||||||||||||||||||||||||||||| d  a(janium) 21594  a(janium)21593 4aQA300b.A97 19541 aAyres Jr., Frank10aTheory and problems of plane and spherical trigonometry  bSchaum  Publishing Co.c1954