By Laurent C.   Cerf M.   Pasquier C.   in Geographie, Economie, Societe

ISSN:1295-926X|4|2|131-153

Elsevier‎(2002)‎

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By Cerf M.   Guillot M. N.   Olry P.   in The Journal of Agricultural Education and Extension

ISSN:1389-224X|17|1|7-19

Routledge Ltd‎(2011)‎

Access to resources Favorite 7.213373