Quizá quiso decir: Aquilafuente ; 243. IFIP The International Federation for Information Processing, 1868-4238 ; 243 Graduate Texts in Mathematics, 0072-5285 ; 243 Progress in Mathematics ; 243 Boston Studies in the Philosophy of Science ; 243 Global Change The IGBP Series, 1619-2435 Topics in Current Chemistry, 0340-1022 ; 243 ESO Astrophysics Symposia, 1431-2433 ESO Astrophysics Symposia, 1431-2433 ESO Astrophysics Symposia, 1431-2433 ESO Astrophysics Symposia, 1431-2433 Global Change - The IGBP Series, 1619-2435 Global Change The IGBP Series, 1619-2435 ESO Astrophysics Symposia, European Southern Observatory, 1431-2433 ESO Astrophysics Symposia, European Southern Observatory, 1431-2433 Advances in Geographic Information Science, 1867-2434 ; 2 Advances in Geographic Information Science, 1867-2434 ESO Astrophysics Symposia, European Southern Observatory, 1431-2433 Eso Astrophysics Symposia, European Southern Observatory, 1431-2433 Eso Astrophysics Symposia, European Southern Observatory, 1431-2433