Ang aming pelikula at video library ay maaari lamang mai-stream o mai-download ng mga miyembro lamang
Magpatuloy na panoorin nang LIBRE ➞Tumatagal ng mas kaunti sa 1 minuto upang Mag-sign Up pagkatapos ay masisiyahan ka sa Walang limitasyong mga pamagat ng Pelikula at TV.
Aufzucht von Bienenköniginnen 1992 Libreng Walang limitasyong Pag-access
Queen rearing is one of the most important areas of beekeeping. After explaining the breeding objectives, the three most common methods for rearing queen bees are described: Breeding in the queenless colony; breeding via the pre-brood box; breeding via starter and finisher. Special attention is also paid to the selection and presentation of the breeding material, selection and preparation of the care colony, controlled mating and the safe introduction of queens into the colonies.
Runtime: 64 minuto
Kalidad: HD
Pakawalan: Jan 01, 1992
Bansa: Germany
Wika: Deutsch
