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035 | |a 9236292 | ||
040 | |a Sistema de Bibliotecas de la Universidad de Costa Rica | ||
082 | 0 | |a 570.151.95 |b K27e |2 22 | |
245 | 1 | 0 | |a Ghosts / |c Niels Keiding |
773 | 0 | |7 nnam |t Eight contributions to encyclopedia of biostatistics | |
912 | |a 22-SEP-2009 - SALAZAR ALVAREZ, CLAUDIO | ||
917 | |a 31-JUL-2009 - ALVARADO MONGE, KATTIA YENORY |