作者: Hendrikus Wilhelmus Wilhelmu Theodorus Janssen
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摘要: The invention relates to a growth device (1) for crop, provided with at least casing (2) and core part (3), wherein the is substantially manufactured from fluid impermeable material surrounds one partly, (3) comprises medium or formed therefrom. further an assembly of two such devices (1), cladding construction comprising method manufacture (1).