@article{article,
title = {Pre-exploitation abundance of tunas in the equatorial central Pacific. Appendix A. Validity of yellowfin tuna as an index of the tuna-shark trophic level. Fishery},
author = {},
year = {1972},
journal = {Bull US natn ocean atmos Admn},
volume = {703},
pages = {911-913},
howpublished = "\url{https://eurekamag.com/research/023/393/023393814.php}"
}