An assessing of grasshopper consumption (Orthoptera: Acridiae) on the primary production of pyrenean pastures above timberline
págs. 3-14
págs. 15-36
págs. 37-48
Dendroclimatic series of Pinus uncinata R. in the Central Pyrenees and the Iberian System, Spain: a comparative study
págs. 49-64
págs. 65-88
Rills, gullies and badlands: reviewing the problem
págs. 89-98
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