Oppenheim, Victor <br/><br/>
The first, 1944, geological exploration of the upper amazon valley in Peru, Valleys of the upper rio Madre de Dios, upper rio Urubamba, Fitzcarrald pass, rio Mishagua and upper rio Ucayali 

<br/><br/>bibliogr. p. 93-94 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Géomorphologie<br/>Hydrologie surface<br/>exploration
<br/><br/><label>Subjects--Index Terms: </label>Pérou