Buletinul Clubului de Speologie „Emil Racoviţă” Bucureşti, numărul 12, anul 1989

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Peştera 6s de la Mânzăleşti, cea mai mare din lume. Foto: Ică Giurgiu, Valentin Ţintea (Clubul de Speologie „Emil Racoviţă” Bucureşti).

Peştera 6s de la Mânzăleşti, cea mai mare din lume. Foto: Gabriel Miclăuş, Ică Giurgiu (Clubul de Speologie „Emil Racoviţă” Bucureşti).