00341nam a2200121Ia 4500008004100000020001500041082001500056100001900071245004600090260003900136650002100175650002300196220204s9999    xx            000 0 und d  a8176635898  a638.1bATW  aAtwal, Avtar S 0aEssentials of bee keeping and pollination  aLudhianabKalyani Publishersc2000  aHoney production  aHoneybee structure