String quartets opp. 12 & 13 string quartets opp.51 & 105 String Quartets opp.127 & 132 string quartets opp.34 & 96 String Quartets Op. 12, 13 string quartets nos.14 & 15 String quartets nos. 1 & 2 String quartets Nos. 1 & 2 String quartets op. 54 nos. 1-3 String Quartets 10 & 13