ed. R.P SINGH. (1985). Directory of Central Oragnisation at Dehradun. Central soil & water conservation research and Training institute.
Παραπομπή σε μορφή Chicago (17η εκδ.)ed. R.P SINGH. Directory of Central Oragnisation at Dehradun. Dehradun: Central soil & water conservation research and Training institute, 1985.
Παραπομπή σε μορφή MLA (9th εκδ.)ed. R.P SINGH. Directory of Central Oragnisation at Dehradun. Central soil & water conservation research and Training institute, 1985.
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