Search Results - Howcroft, N.

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    Papua New Guina tree introduction and improvement progress report 1972-1974 /

    Papua New Guina tree introduction and improvement progress report 1972-1974 / by Howcroft, N.

    Published 1974
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  2. 2
    Tree improvement and seed procurement activities in Papua New Guinea progress report 1974-1978

    Tree improvement and seed procurement activities in Papua New Guinea progress report 1974-1978 by Howcroft, N. H. S.

    Published 1979
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