Nitrogen fixation in Indian rice fields : azolla and blue green algae
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| Format: | Book |
| Language: | English |
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Bikaner :
Agro Boatnical Publishers ,
1989
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Add Tag | Physical Description: | 236p. |
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| ISBN: | 8185031258 |
China: azolla propagation and small-scale biogas technology: report on an FAO / UNDP study tour to the People's Republic of China, 21 May-11 June 1978