A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #0-9

Ivanov M.I. (1992) New evidence on the Upper Barremian-Lower Aptian ammonite succession in the north of the town of Popovo (North-East Bulgaria) // Comptes rendus de l"Académie bulgare des Sciences. Tome 45, 9. Pp. 69-72.