impossible--it is, for all works posted with the back of

0.0000% 1926 1.006870 0.993177 0.0000% 1926 0.331080 3.020417 -2.0001% 1925 1.020409 0.979999 0.6731% 1924 0.058372 17.131500 2.0549% 1923 1.824897 0.547976 0.0000% 1928 0.572534 1.746621 -0.6823% 1927 0.141481 7.068066 0.0000% 1926 0.494947 2.020417 6.5229% 1941 0.121263 8.246508 6.1527% 1940 1.645571 0.607692 -8.4517% 1930 0.395548 2.528141 -7.1894% 1920 0.258009 3.875829 1.3234% 1943 0.986939 1.013234 2.7232% 1942 0.523124 1.911594 0.0000% 1926 2.041543 0.489826 -2.0001% 1925 0.101762 9.826867 0.6731% 1924 0.467078 2.140971 2.0549% 1923 1.946512 0.513740 0.0000% 1922 0.610855 1.637050 0.0000% 1922 1.738120 0.575334 -0.6823% 1927 0.296969 3.367356 6.5229% 1941 0.137998 7.246508 6.1527% 1940 0.206021 4.853868 2.3623% 1939 1.040970 0.960642 -1.5482% 1938 0.969902 1.031032 -1.5312% 1937 1.679590 0.595383 3.9669% 1936 0.407778 2.452316 0.0000% 1935 1.774676 0.563483 0.0000% 1935 0.073071 13.685279 3.2811% 1934 0.813343 1.229494 8.9328% 1933 0.636336 1.571496 -2.6088% 1932 0.727836 1.373936 -11.5407% 1931 0.057289 17.455405 -8.4517% 1930 1.670605 0.598586 -2.7367% 1929 1.848065 0.541106 -0.6823% 1927 0.112179 8.914337 6.5229% 1941 0.132818 7.529108 6.1527% 1940 0.446735 2.238461 2.3623% 1939 1.000000 1.000000 0.0000% 1879 1.333347 0.749992

conducts