USSR
Slogan: "Collective farmers, build ponds and reservoirs!"
| Country: | USSR |
| Type: | Postage stamps |
| Series: | State forest shelterbelts and field-protective forestation |
| Nominal: | 50 k |
| Year: | 1949 |
| Perforation: | line 12½ |
| Mintage: | 500,000 |
State forest shelterbelts and field-protective forestation
