Galería fotográfica - INVASSAT
Waddington, Rod. Building Foundation, Ethiopia
Waddington, Rod. Building Foundation, Ethiopia. 03.08.2013. Wikimedia Commons Compartido con licencia Creative Commons BY-SA 2.0
[2009] A geologist collecting a lava sample for chemical analyses from an active lava flow on Kilauea
[2009] Hawaii Volcano Observatory, USGS. A geologist collecting a lava sample for chemical analyses from an active lava flow on Kilauea, using a rock hammer and a bucket of water. 26.06.2009. Wikimedia Commons. (1)
Securing wire on hop job; tractor pulling high tower
Securing wire on hop job; tractor pulling high tower. Gifford Photographic Collection. OSU Special Collections & Archives : Commons, vía Flickr . (1)
[ca 1900. Loggers
[ca 1900] Loggers. Gerald W. Williams Collection. [ca. 1900] OSU Special Collections & Archives : Commons, vía Flickr. (1)
ca. 1941 Construction workers at a considerable height without appropriate fall protection equipment.
[ca1941] The National Institute for Occupational Safety and Health (NIOSH). Construction workers at a considerable height without appropriate fall protection equipment. Estados Unidos / Estats Units. [ca 1941] Wikimedia Commons. (3)
1939 - Australian women in the munitions and aircraft construction industries
[1939ca - 1944 ca] "Australian women in the munitions and aircraft construction industries, World War II". Victoria, Australia / Austràlia. 1939ca - 1944ca. State Library Victoria, via Flickr. (3)
1920 - Students working with a printing press, Working Men's College
[1920ca - 1930ca.] "Students working with a printing press, Working Men's College." Melbourne, Australia / Austràlia. 1920ca - 1930ca. State Library Victoria Collections. (3)
1894 Fridtjof Nansen leser temperaturen fra vannhenteren
[1894] Fridtjof Nansen. Fridtjof Nansen leser temperaturen fra vannhenteren, 1894. Polhavet. Nasjonalbiblioteket / National Library of Norway, vía Flickr. (1)
1920 Bull gas tractor - Gainesville
[1920] Bull gas tractor - Gainesville, 1920. Florida Memory, vía Flickr.(1)
1992 Assembling Structures in the Payload Bay
[1992] Assembling Structures in the Payload Bay, 14/05/1992. NASA on The Commons, vía Flickr.(1)
(1) Documento sin restricciones conocidas de derechos de autor. (2) Documento en el dominio público. (3) Documento compartido bajo licencia Creative Commons. / (1) Document sense restriccions conegudes de drets d'autor. (2) Document en el domini públic. (3) Document compartit amb llicència Creative Commons.