@misc{indiciae922acf03fb99, title = {Ordering Procedures for Photographic Enlargement Products - NAPP, NHAP, and Custom}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {2002}, doi = {10.3133/fs10202}, url = {https://pubs.usgs.gov/publication/fs10202}, note = {Source identifier: fs10202} }