How much shall I buy? A mathematical approach to ordering /
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
[S.L.] :
Imperial Chemical industries,
[19- ]
|
| Pynciau: |
| Disgrifiad Corfforoll: | 13 p. : ill. |
|---|