Soil conservation /
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Awduron Corfforaethol: | , , |
| Awduron Eraill: | , |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Canberra :
Curriculum Development Centre,
1979.
|
| Cyfres: | ASMP ;
unit 0901 |
| Pynciau: |
| Disgrifiad o'r Eitem: | Soils. Conservation. For schools (ANB/PRECIS SIN 0463930) "Agricultural Science Materials Project, a joint project of the CDC and the NSW Department of Education'. |
|---|---|
| Disgrifiad Corfforoll: | v, 44 p. : ill., map ; 25 cm. |
| ISBN: | 0642960933 : 0642096093 |