1 Subjects: “...Plant genetic engineering / Risk assessment...”

2 Subjects: “...Plants, Cultivated / Developing countries / Patents...”

3 Subjects: “...Nuclear power plants / Soviet Union / History / 20th century...”

4 “...How plant and animal species conservation became part of urban planning in Berlin, and how...”

5 “... and method of classifying pure chemical substances and then describe the continuing classification of plant...”

6 “... in the United States, generating capacity must be doubled in the next ten years. Plants scheduled to be retired...”