@article{E. W. Heymann1991,
author = "E. W. Heymann and G. Hartmann",
journal = "Primates",
number = "4",
pages = "533-537",
title = "{G}eophagy in {M}oustached {T}amarins, {S}aguins mystax ({P}latyrrhini: {C}allitrichidae), at the {R}io {B}lanco, {P}eruvian {A}mazonia",
volume = "32",
year = "1991",
}