IN WHAT YEAR DID THE INVENTION OF PHNOGRAPH OCCUR
2. In what year did the invention of phnograph occur?
A. 1876
B. 1877
C. 1878
D. the article does not say
2. In what year did the invention of phnograph occur?
A. 1876
B. 1877
C. 1878
D. the article does not say