Publisher
- Packers and Stockyards Administration3
- Pant Industry, Soils, and Agricultural Engineering Bureau7
- Patent Office56
- Personnel Office18
- Personnel and Business Administration Office6
- Plant Industry Bureau6,359
- Plant Industry, Soils, and Agricultural Engineering Bureau347
- Plant Quarantine Bureau23
- Plant Quarantine and Control Administration52
- Plant and Operations Office6
- Porto Ric Agricultural Experiment Station2
- Porto Rico Agricultural Experiment Station83
- Production Office3
- Production and Marketing Administration185
- Public Roads Bureau880
- Public Roads Office65
- Public Roads and Rural Engineering Office89
- Public Roads bureau9
- Publications Division681
- Puerto Rico Agricultural Experiment Station21