TY - JOUR T1 - Observations Concerning the Comet That Was Seen in Brasil, An. 1668. in March, by P. Valentin Estancel a Jesuit, and by Him Sent to Rome; Where They Were Printed in the 9th Italian Giornale de Letterati, Septemb. 31. 1673 JF - Philosophical Transactions (1665-1678) VL - 9 SP - 91 EP - 93 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1674.0024 M3 - doi:10.1098/rstl.1674.0024 AU - Estancel, P. ER -