Ruttner Friedrich <br/><br/>
Breeding Techniques And Selection For Breeding Of The Honeybee An Introduction To The Rearing Of Queens The Conduct Of Selection Procedures And The Operation Of Mating Stations 

 -  Munich : British Isles Bee Breeders 1988. 
 - 152 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0905369076 (Pbk)