Introduces various symbols, signals, and ways of sending messages that may be used to communicate information. Includes such things as alphabet, bells, facial expressions, flags, and smoke signals.
Introduces various symbols, signals, and ways of sending messages that may be used to communicate information. Includes such things as alphabet, bells, facial expressions, flags, and smoke signals.
An introduction to various symbols, signals, and ways of sending messages that may be used to communicate information. Includes such things as alphabet, bells, facial expressions, flags, and smoke signals.
