Progress report on the cartographic activities of the Inited States : jan. 1, 1969-dic. 31, 1972, for presentation to the XII Panamerican Consultation on Cartography in Panamá, Panamá, april 22-march. 9, 1973.

IPGHUnited States. Departament of the Interior2015-07-152015-07-151973https://repository.uneca.org/bitstream/handle/10855/10938/Bib-51763.pdfhttps://bibliotecadigital.ciren.cl/handle/20.500.13082/25491PDFenAtribución 3.0 ChileInstrumentos cartográficosProgress report on the cartographic activities of the Inited States : jan. 1, 1969-dic. 31, 1972, for presentation to the XII Panamerican Consultation on Cartography in Panamá, Panamá, april 22-march. 9, 1973.SeminarioCartografía y sensores remotos4275