Optimalnata gŭstota na posevite, reshavashto uslovie za uvelichavane na dobivite
By: Emil Nikolov.
Publisher: Ministerstvo na zemedelieto i khranitelnata promishlenost
Published: 1978
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 46
Subjects: Plant spacing.; Planting time -- Bulgaria.