| 61. | .pdb | Chemical test ◊ Data (TACT - Packrat 5.0) ◊ Database (3Com Palm) ◊ Physical model backup (PowerDesigner) ◊ Pilot Image Format ◊ Protein DataBank |
| 62. | .pdd | Bitmap graphics (Paint Shop Pro, Adobe PhotoDeluxe) |
| 63. | .pdf | Portable Document Format (Adobe Acrobat) ◊ Database Interchange Format (PCAD) ◊ Graphics file (ED-SCAN 24bit format) ◊ Package definition file (download info) (Microsoft SMS) ◊… 0.5 KB |
| 64. | .pdg | Data (Print Shop Deluxe) |
| 65. | .pdl | Project Description Language file (Borland C++) |
| 66. | .pdm | Physical model file (PowerDesigner) |
| 67. | .pdp | Document (Print Shop Deluxe) |
| 68. | .pdq | Flowchart (Flowcharting PDQ Lite) |
| 69. | .pds | Graphics (VICAR - Video Image Communication and Retrieval) ◊ Pldasm language source code file (hardware assembly) ◊ Space mission data (Planetary Data System Format) (NASA) |
| 70. | .pdt | Database (ProCite) |
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