Beek, Leo, author
Dutch pioneers of science
Van Gorcum, 1985
 Buku Referensi
Pioneers in green science : beberapa model penerapan konsep ramah lingkungan di Indonesia
oleh Liana Bratasida [and others]
Dian Rakyat, 2011
 Buku Teks
Cather, Willa, 1873-1947, author
O pioneers
Vintage Books, 1992
 Buku Teks
Cather, Willa, 1873-1947, author
O pioneers
A Signet Classic, 1988
 Buku Teks
Dutch, Steven I.
Earth science/Steven I. Dutch, James S. Monroe, Joseph M. Moran
Belmont Wadsworth 1997,
 Buku Teks
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