共查询到20条相似文献，搜索用时 15 毫秒
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Paul Katzenberger 《Die Naturwissenschaften》1975,62(12):555-564
Works in the natural sciences are provided with comparatively less copyright protection than literary works. Nevertheless, this protection is important- for scientists. However, more recently, modern methods and techniques of information and documentation, such as reprography, microfilm archives, electronic data storage and retrieval, and data transmission have questioned the justification and effectiveness, even in principle, of this protection. A more detailed analysis demonstrates that this involves not so much a crisis of copyright law as a crisis of the entire field of scientific information. 相似文献
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A. Spiegel 《Die Naturwissenschaften》1972,59(1):29-34
Gnotobiotics is concerned with the breeding and rearing of animals which are completely free from micro-organisms or by design carry only known organisms. Gnotobiotic animals enable animal-parasite interactions to be studied and further-more have proved useful as experimental animals for special purposes. 相似文献
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