pear-tree
| oyster
| scale
| pear tree | |
| agric. | Pyrus communis |
| biol. | Pirus montana var. rehderi Nakai |
| pear-tree | |
| agric. | Pyrus communis |
| oyster | |
| fish.farm. | Crassostrea angulata; Crassostrea gigas; Crassostrea virginica; Ostrea chilensis; Ostrea edulis; Ostrea laperousei |
| scale | |
| biol. | Coccidea spp.; Coccidae |
| nat.sc. | squama |
| scales | |
| biol. | Coccoidea |
|
pear-tree : 14 phrases in 4 subjects |
| Agriculture | 5 |
| Biology | 3 |
| Entomology | 3 |
| Natural sciences | 3 |