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English language Derwent Abstract of DE 23 59 399. |
English language Derwent Abstract of DE 38 43 892. |
English language Derwent Abstract of DE 39 18 135. |
English language Derwent Abstract of DE 40 21 760. |
English language Derwent Abstract of DE 41 33 957. |
English language Derwent Abstract of DE 42 39 390. |
English language Derwent Abstract of DE 43 36 803. |
English language Derwent Abstract of DE 43 37 035. |
English language Derwent Abstract of DE 44 43 645. |
English language Derwent Abstract of DE 195 43 988. |
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English language Derwent Abstract of JP 63-169571. |