APA-čujuhus (7. p.)
Tripathi, R. P., & Singh, H. (1993). Soil erosion and conservation. New Age International.
Chicago-čujuhus (17. p.)
Tripathi, R. P., juo H.P Singh. Soil Erosion and Conservation. Kolkata: New Age International, 1993.
MLA-čujuhus (9. p.)
Tripathi, R. P., juo H.P Singh. Soil Erosion and Conservation. New Age International, 1993.
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