1
Published: 1902
Superior document: Transactions of the Texas Academy of Science 4,2,[3]
2
Published: 1901
Superior document: Transactions of the Texas Academy of Science 4,1,[2]
3
Published: 1897
Superior document: Transactions of the Texas Academy of Science 2,1,[3]
4
Published: 1902
Superior document: Transactions of the Texas Academy of Science 4,2,[1]