See Allo

Harsja W. Bachtiar, 1934-, author

Lembaga Ekonomi dan Kemasyarakatan Nasional (LEKNAS), 1973

Buku Klasik

Beeby, C. E., author

New Zealand Council for Educational Research, 1979

Buku Teks

Harsja W. Bachtiar, 1934-, author

LIPI, 1973

Buku Teks

Beeby, C. E., author

LP3ES, 1981

Buku Teks

Beeby, C. E., author

LP3ES, 1982

Buku Teks

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