Biotechnology 1.173 Plant biotechnology 141 Plant Biotechnology 116 BIOTECHNOLOGY 93 Genetic engineering 70 Microbial biotechnology 60 Agricultural biotechnology 52 Molecular biology 52 Plant Biotechnology and Molecular Biology 36 Environmental biotechnology 34 Genetics 34 Agriculture 31 Chemical engineering 30 Industrial microbiology 30 Plant breeding 30 Biotechnology (General), (Revised June 2002) 29 Pharmaceutical biotechnology 29 biotechnology 29 Enzymes 27 Bioremediation 26 Nanotechnology 25 Genetic Engineering 24 Microbiology 24 Biotechnology industries 22 Dissertations, Academic (Ph.D) 22 Genetic engineering-- Biotechnology 22 Transgenic plants 21 Biochemistry 19 Plant Breeding and Genetics 18 Thesis (Ph.D)-Biotechnology 18