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1पुस्तकद्वारा Hayward, J. A. (John Aldred)“…New Zealand Agricultural Engineering Institute…”
प्रकाशित 1969
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2पुस्तकप्रकाशित 1968“…New Zealand Agricultural Engineering Institute…”
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3पुस्तकद्वारा Hayward, J. A. (John Aldred)“…New Zealand Agricultural Engineering Institute…”
प्रकाशित 1968
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4पुस्तकद्वारा Jobling, G. A., 1943-1982“…New Zealand Agricultural Engineering Institute…”
प्रकाशित 1974
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12पुस्तकप्रकाशित 1968“…New Zealand Agricultural Engineering Institute…”
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14पुस्तकप्रकाशित 1987“…New Zealand Agricultural Engineering Institute…”