Primer For Professionals
Sign in to track this film in your collection or want list.
✎ Suggest a correctionDeals with nitrogen fertility in the soil, one of agriculture's most basic topics. Explains the use of anhydrous ammonia as the source of nitrogen for crop growth.
Related films
Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — creator, catalog record
Original permalink · Record added 2023-02-27 03:18:57 · Suggest a correction