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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Commercial phonograph records are made in four speeds, namely, 78 (approximately), 45, 33 1/3, and 16 2/3 rpm. The 78-rpm records are made in three diameters, 12, 10, and 7 in. The normal maximum playing times for full-width records are 5, 3 1/2, and 2 1/2 min, respectively. The 33 1/3-rpm records are made in three diameters, 12, 10, and 7 in. The normal maximum playing times are 25, 17, and 8 min, respectively. The 45-rpm records are made in a diameter of 7 in. and have a normal maximum playing time of 8 min. The 16 2/3-rpm records are made in a diameter of 7 in.  1, record 1, English, - 45%2Drpm%20record

Record number: 1, Textual support number: 1 OBS

"RPM" stands for "revolutions per minute".  3, record 1, English, - 45%2Drpm%20record

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Disque pour l'enregistrement et la reproduction du son existant en 3 diamètres et tournant à une vitesse de 45 rotations à la minute.  3, record 1, French, - disque%2045%20tours

Record number: 1, Textual support number: 1 OBS

Les disques 45 tours qui ont un trou central plus grand sont dotés d'un centreur de 45 tours, accessoire utile qui les adapte. [cf. CHUTI, 1980, p. 170]  4, record 1, French, - disque%2045%20tours

Record 1,  Textual support,  Spanish