termometro digital

vale veo un problema he subido el codigo al programa arduino y me parece que le falta la libreria one wire xq me dice esto:

sketch_may25b.cpp:1:47: error: onewire.h: No such file or directory
sketch_may25b.cpp:3:61: error: dallastemperature.h: No such file or directory
sketch_may25b.cpp:5:54: error: liquidcrystal.h: No such file or directory
sketch_may25b:14: error: 'OneWire' does not name a type
sketch_may25b:19: error: 'DallasTemperature' does not name a type
sketch_may25b:24: error: 'LiquidCrystal' does not name a type
sketch_may25b.cpp: In function 'void setup()':
sketch_may25b:36: error: 'lcd' was not declared in this scope
sketch_may25b:58: error: 'sensors' was not declared in this scope
sketch_may25b.cpp: In function 'void loop()':
sketch_may25b:76: error: 'sensors' was not declared in this scope
sketch_may25b:96: error: 'lcd' was not declared in this scope
sketch_may25b.cpp: At global scope:
sketch_may25b:124: error: expected unqualified-id before '<' token