AGRICULTURE 
ral 
ter: 
638.122 
123 
3 
125 
126 
1299 
13 
II 
I22 
’ 
22 
’3 
1 
5 
36 
L 
+) 
62 
63 
64 
7 
R 
5 
(24 
135 
136 
I2% 
Races of hive bees Apidae 
Varieties of common honey-bee 
Black bees (general) 
Yellow bees (general) 
European varieties 
Black or German bee 
Italian or Ligurian bee 
Asiatic varieties 
African “ 
Other genuses of honey bee 
Pasturage 
General questions 
Calendarial. Cultivation 
Nectar plants 
When works dealing with divisions of 638.132 ar further limited by 
latitude, clas in 638.133 
Nectar: production by plant, composition, etc. 
Cultivation of nectar-producing plants 
By color of nectar 
Very light 
Light 
Medium 
Dark 
Very dark 
By plant type 
Trees, shrubs, vines, herbaceous 
Species 
Divided like 580 
By season 
Spring nectar 
Summer ¢ 
Autumn ¢ 
Physiograficly 
Water plants, medow, forest, rock etc. 
By elevation 
Mountain, sea level, etc. 
By country 
Divided like 940-999 
For general works only; better clast, when possible, by latitude 638.133 
Latitudinal nectar-plant classification or distribution 
Clas here works combining features coverd by 638.133 and 638.132 or 
638.134-.137 
Tropic regions: 20 degrees N and S 
Warm “ 20-30 degrees 
Warm temperate regions: 30-35 degrees 
Temperate regions: 35-40 degrees 
Cool temperate regions: 40-45 degrees 
Cool regions: 45-50 degrees 
Cold regions: 50 degrees — 
Fruit trees and shrubs 
Divided like 634 
Other trees and shrubs 
Clovers 
Other nectar plants