科学类 meaning in Chinese

science

I am looking for language / science textbooks
我在找语言/科学类课本。
Electives in economics decision sciences
经济和决策科学类
Jsci is a collection of packages containing mathematical and scientific classes
Jsci是一个包集合，包含数学和科学类。
Investigation and analysis on network status of professional periodicals in biology
生物科学类专业期刊网络化现状调查与分析
Analysis on keywords and keyword links appearing in papers of five journals on environmental science
五种环境科学类期刊关键词链耦合性分析

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