1
by Hartmann, H.
Published in Rheinischer Schulmann (1888)
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urn:nbn:de:0111-bbf-spo-12873268
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2
by Hartmann, H.
Published in Rheinischer Schulmann (1886)
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urn:nbn:de:0111-bbf-spo-12276835
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4
by Hartmann, H.
Published in Rheinischer Schulmann (1883)
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urn:nbn:de:0111-bbf-spo-12253044
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5
published 1921
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urn:nbn:de:bsz:14-ppn3117095324
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6
published 1902
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urn:nbn:de:bsz:14-ppn306388987
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7
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8
by Hartmann, H.
Published in Brauwelt (2005)
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12
13
14
15
by Hartmann, H.
Published in Pure and Applied Chemistry (1977)
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16
by Hartmann, H.
Published in Pure and Applied Chemistry (1965)
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17
by Hartmann, H.
Published in Pure and Applied Chemistry (1962)
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18
19
by Hartmann, H.
Published in Astronomische Nachrichten (1925)
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