Subjects: Science Activities; Earth Science; Concept TeachingTexas
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Subjects: *MANUFACTURING industries; *CONSUMERS; WATER quality monitoring
Subjects: Mineralogy; Science Education; Scientific Concepts
Subjects: *MARKETING; *MATERIALS handling; CONVEYOR belts
Subjects: SAND blasting; VOLVO trucks; EMULSION paint
Subjects: ECONOMIC development; POLITICAL risk (Foreign investments)UNITED States
Subjects: ECONOMIC development; NATIONAL security; ECONOMIC policyUNITED States
Subjects: ECONOMIC development; ECONOMIC policyUNITED States