| 000 | 00568nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 140208s9999 xx 000 0 und d | ||
| 044 | _aIndia | ||
| 100 | _aSingh, Mahender Nath | ||
| 245 |
_aStudies on the variable efficiency of aphid vectors in transmitting plant viruses and epidemiology of potato viruses Y and leafroll : thesis submitted for the degree of Philophy in Botany in the faculty of science Himachal Pradesh University Simla 1981 _cMahender Nath Singh |
||
| 260 |
_bHimachal Pradesh University _aSimla _c1981 |
||
| 300 | _a243 p.; 29cm. | ||
| 942 |
_2udc _cTH |
||
| 999 |
_c20640 _d20640 |
||