primary researchprimary responsibilityprimary rightsprimary schoolprimary sectorprimary sedimentation tankprimary sensory neuronprimary sludgeprimary sourceprimary sourcesprimary stageprimary storageprimary stressprimary structureprimary stutteringprimary substanceprimary successionprimary surface ruptureprimary surveillance radarprimary surveyprimary targetprimary teacherprimary termprimary tide stationprimary tillageprimary tissueprimary tokophobiaprimary toothprimary trainerprimary transcriptprimary treatmentprimary tuberculosisprimary tumorprimary veinprimary waveprimary xylemprimateprimatectomyprimatesprimathologistprimatologistprimaveralprimeprime age workersprime and properprime brokerprime brokerageprime coalprime coatprime concern
