SP e - stag
- SP electrode
- SP emf (electromotive force)
- SP interference
- SP interpretation
- SP log
- SP logging
- SP measuring electrode
- SP phenomenon
- SP scale
- SP seismometer
- SP survey
- SP track
- SP wave
- sp; sp departure amplitude
- sp; spontaneous polarization
- space density
- space domain
- space imagery
- space phase
- space variations
