• 3 Environmental aspects
• 3 Freshwater ecology
• 3 Lake conservation
• 3 Lake ecology
• 3 Water transfer
• 2 Environmental conditions
• 2 Lake restoration
• 2 Water conservation
• 2 Water-supply engineering

• 3 Green Planet Films
• 2 Palomar College. Educational Television
• 2 Trixi Huish Photography and Video Productions
• 2 Wisneski, Bill
• 1 Alexander Street Press
• 1 Films Media Group
• 1 Films for the Humanities & Sciences (Firm)

• 5 English

• 2 Salton Sea

• 4 Documentary films
• 2 Feature films
• 2 Internet videos
• 1 Educational films
• 1 Video recordings for the hearing impaired
• 1 Videorecording

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