William Block. The National Historical Geographic Information System: An Update. In IASSIST 2003 - Strength in Numbers, Ottawa, Canada, May 27-30, 2003. IASSIST, 2003.
@inproceedings{Block03a,
title = {The National Historical Geographic Information System: An Update},
author = {William Block},
year = {2003},
researchr = {https://researchr.org/publication/Block03a},
cites = {0},
citedby = {0},
booktitle = {IASSIST 2003 - Strength in Numbers, Ottawa, Canada, May 27-30, 2003},
publisher = {IASSIST},
}