@inproceedings{inproceedings25a9f1c4,
title   = {Some problems in the late paleozoic geology of South Amarica},
author = {Rocha-Campos, A. C.},
year = {1972},
publisher = {IGc/USP},
booktitle   = {International Symposium on the Carboniferous and Permian Systems in South America}
}