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We talk about nitrogen
low consumer of P and medium of K
a temporary green mulch can be created to avoid the formation of crust
Waldorf schools are all over the world
302 - Insegnamento e conoscenza dell'uomo - Rudolf Steiner Ctetur We talk about nitrogenThis series of conferences constitutes the completion of the course for teachers held in Stuttgart in 1919, when the first Waldorf school was founded. Page 128 Publisher: Antroposofica Editrice
