Gustafson, A. F. (2003). Handbook of fertilizers: Their source, make-up, effect and use. Agrobios (India).
Παραπομπή Chicago StyleGustafson, A. F. Handbook of Fertilizers: Their Source, Make-up, Effect and Use. Jodhour: Agrobios (India), 2003.
Παραπομπή MLAGustafson, A. F. Handbook of Fertilizers: Their Source, Make-up, Effect and Use. Agrobios (India), 2003.
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