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B.S. 22192. Sawgrass. General Roca, 

 Rio Negro^ Argentina* 

 November 24, 1920* 



r 



r 



B.S. 22195* Arid gravel hills. • 

 General Roca, r£o Negro, Argent.lna. 

 November 25,^1920. 



B.S. 22194* Arid gravel hills. 

 General Roca, Rio Negro, 

 Argentina. 



November 25, 1920. 



