search query: @keyword space debris / total: 2
references: 1-2 / 2
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title | year | author | ||
1. | 2015 | Viitanen, Venla |
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2. | 2003 | Virtanen, Annukka |
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INSSI
title | year | author | ||
1. | 2015 | Viitanen, Venla |
||
2. | 2003 | Virtanen, Annukka |