| Subject | |
|  | Planning, Strategic See: Strategic planning | 
|  | Planning --Terminology. | 
|  | Plans See: Mechanical drawing | 
|  | Plant anatomy. | 
|  | Plant associations See: Plant communities | 
|  | Plant biodiversity See: Plant diversity | 
|  | Plant biological diversity See: Plant diversity | 
|  | Plant biometeorology See: Crops and climate | 
|  | Plant biosystematics See: Botany--Classification | 
|  | Plant biotechnology. | 
|  | Plant biotechnology--Developing countries. | 
|  | Plant biotechnology--Technology transfer--Developing countries. | 
|  | Plant biotechnology--United States. | 
|  | Plant breeding--Research. | 
|  | Plant cells and tissues--CD-ROMs. | 
|  | Plant classification See: Botany--Classification | 
|  | Plant collecting--Amazon River Region--History | 
|  | Plant collecting--Bolivia--Bio-bibliography | 
|  | Plant collecting--Ecuador--History | 
|  | Plant collecting--History. | 
|  | Plant collection--History. | 
|  | Plant collectors--Amazon River Region--History | 
|  | Plant collectors--Bolivia--Bibliography | 
|  | Plant collectors--Ecuador--History | 
|  | Plant communities. | 
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