Study Of Twins, Pt 2
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✎ Suggest a correctionShows identical twins at 12, 15, 18 and 21 months. Demonstrates the getting up, standing and walking stages. Shows the amount of independent and cooperative play.
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- 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) — catalog record
Original permalink · Record added 2023-02-27 04:29:03 · Suggest a correction