Tutkimuksia taimityyppiluokituksen laatimista varten. III. Taimien morfologisten tunnusten muttuminen kasvukauden aikana | Investigations into the basis for grading nursery stock. III. Changes in morphological characteristics of nursery stock during the vegetative period. [Pinus sylvestris, Picea abies, Betula verrucosa] | Investigations into the basis for grading nursery stock. III. Changes in morphological characteristics of nursery stock during the vegetative period

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