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6Further Reading: SiegeI-Causey E et al (1988) Non-symbolic communication in early interactional processes and implications for intervention. In M Bullis & G Fielding (eds) Communication Development in Young Children with Deaf-Blindness: Literature Review. Monmouth, Oregon.

Nielsen L

(1990) Are You Blind? Sikon, Denmark.

Longhorn F

(1988) A Sensory Curriculum for Very Special People: a practical approach to curriculum planning. Human Horizon Series, Souvenir Press. (Ch. 6:128-145; and Ch.8:155-