Vytlačiť
1. Returns to farm-level soil conservation on tropical steep slopes
:ARAYA, Bereket - ASAFU-ADJAYE, John. Returns to farm-level soil conservation on tropical steep slopes : the case of the eritrean highlands. Brisbane : The University of Queensland, 1999. 24 s. Discussion paper, No. 253. ISSN 1033-4661. [Počet ex. : 1, z toho voľných 1, prezenčne 0]