Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'Groot, Hans Cornelis 1939-', amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 1

    Co-orientation and technological change communication variables in perceptions of 'miracle rice' in the Philippines gan Groot, Hans Cornelis 1939-

    Cyhoeddwyd 1970
    Llyfr

    Co-orientation and technological change communication variables in perceptions of 'miracle rice' in the Philippines
  2. 2

    Agricultural journalism gan Groot, Hans Cornelis 1939-

    Cyhoeddwyd 1964
    Llyfr

    Agricultural journalism

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