(en) S. W. Daszynski, « A Polish Expedition to the High Andes », The Geographical Journal no 84, 1934, p. 215-223 (ISSN1475-4959) JSTOR:1785755 (OCLC51205408), « This concluded the mountaineering programme of the expedition in the Cordillera de la Ramada. All the peaks were climbed for the first time and mapped to a fair degree of accuracy. Cairns were erected on the summits of Mercedario, Cerro Ramada, and Alma Negra. There remained only the last point of the programme, the climbing of the Aconcagua, which was some 80 miles in a straight line to the south of the Ramada. »
jstor.org
(en) S. W. Daszynski, « A Polish Expedition to the High Andes », The Geographical Journal no 84, 1934, p. 215-223 (ISSN1475-4959) JSTOR:1785755 (OCLC51205408), « This concluded the mountaineering programme of the expedition in the Cordillera de la Ramada. All the peaks were climbed for the first time and mapped to a fair degree of accuracy. Cairns were erected on the summits of Mercedario, Cerro Ramada, and Alma Negra. There remained only the last point of the programme, the climbing of the Aconcagua, which was some 80 miles in a straight line to the south of the Ramada. »
worldcat.org
(en) S. W. Daszynski, « A Polish Expedition to the High Andes », The Geographical Journal no 84, 1934, p. 215-223 (ISSN1475-4959) JSTOR:1785755 (OCLC51205408), « This concluded the mountaineering programme of the expedition in the Cordillera de la Ramada. All the peaks were climbed for the first time and mapped to a fair degree of accuracy. Cairns were erected on the summits of Mercedario, Cerro Ramada, and Alma Negra. There remained only the last point of the programme, the climbing of the Aconcagua, which was some 80 miles in a straight line to the south of the Ramada. »
