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Aparato para sembrar a surco o surcos, caracterizado esencialmente por un cuerpo contenedor de grano con una apertura para su colocación y que está atravesado por un eje que, a sus extremos cada uno lleva su correspondiente rueda, formando un pequeño vehículo.
ES0018696U1948-12-011948-12-01Aparato para sembrar a surco o surcos.
ExpiredES18696Y
(es)
Studies of varietal characteristics of rice seedling under abnormal conditions of growth environmnts: 3 Organization, of abnormal heading by short-day treatment during seedbed stage