Similarly, the Gato Barbieri Impulse QS releases were likewise single inventory QUAD releases:
GATO BARBIERI -
Chapter 1/ Latin America. Impulse AS-9248 (QS), A 8027 9248 (QS8),
ABC LP-7080 (QS) [Venezuela], Impulse 3C 064-94856 (QS) [Italy],
28 674 ET (QS) [Austria], AS 9.248 (QS) [France], IMP 443 (QS) [Italy],
IMP-88139 (QS) [Japan], SPBA-3066 (QS) [Australia], Probe 5C 062-94856
(QS) [Netherlands], AS 9248 (QS) [Argentina], J 062-94.856 (QS) [Spain],
Probe XPOL 15054 (QS) [Brazil]
{The US version is the only one that indicates Compatible Stereo / Quad}
Chapter 2/ Hasta Siempre. Impulse AS-9263 (QS), 28 675 ET (QS) [Germany],
AS-9.263 (QS) [France]
Chapter 3/ Viva Emiliano Zapata. Impulse ASD-9279 (QS), DQ-9008 (QS)
[Spain], 19.0009 (QS) [Spain], IMPL 8003 (QS) [UK], ABC ABC-7081 (QS)
[Venezuela]
{The UK & Venezuela versions do not mention Quad}
Chapter 4/ Alive in New York. Impulse ASD-9303 (QS), 3C 064-96706 (QS)
[Italy], 9027-9303 (QS) [Canada], ASD-9.303 (QS) [France], YQ-8506-AI
(QS) [Japan]
{The Japan version does not mention QS on the back cover like all other versions}
La China (Mono) B/W La China (Stereo). Impulse IMP-282 (QS45)
{Unmarked quad 45rpm single from quad only album}
{The titles above were released only in quad, no stereo version known}