Proceedings - Seminar of the Labour and Labor Management in Horticulture ( 1971 : Warszawa); Krijgsman, H. K. (The Hague : International Society for Horticultural Science, 1973)
c.1 en p.p.
BATCH-UPD
BATCH-UPD
BATCH-UPD
BATCH-UPD
CONVERSION
Keywords: Agricultura -- Trabajadores; Horticultura -- Aspectos económicos.