Dangos 1 - 1 canlyniadau o 1 ar gyfer chwilio 'Phensupha, Khun Nattaporn', amser ymholiad: 0.01e Mireinio'r Canlyniadau
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    Modified shallow wells a farmer developed technology for Northeast Thailand gan Craig, Iain A., Phensupha, Khun Nattaporn, Ragland, John L.

    Cyhoeddwyd 1987
    Llyfr

    Modified shallow wells a farmer developed technology for Northeast Thailand

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