PZN
Drone brood trapping of Varroa mites - an efficient way to reduce colony infestation during honey flow. Pszczelnicze Zeszyty Naukowe. 42
.
1998. Varroa treatment with KombiAM, a combination of formic acid at low concentration and oil of marjoram, results from a field trial. Pszczelnicze Zeszyty Naukowe. 42
.
1998.