'ABBA' - an album full of B-sides?

On listening to the album this morning, it occurred to me that, back in the day when B-sides were a thing on vinyl, this album was choc-full of them! 

With possibly one exception (see below):-

• 'Mamma Mia' - B-side of 'SOS' in Italy
• 'Hey Hey Helen' - B-side of 'Fernando' in Sweden and UK, amongst others, also B-side of 'Mamma Mia' in some territories
• 'Tropical Loveland' - B-side of 'Mamma Mia' in UK amongst others, also featured prominently as a B-side to 'Fernando' in many countries
• 'SOS' - B-side of 'Bang-A-Boomerang' in France (the coupling was perhaps 'flipped' later with 'SOS' given A-side status? Not sure....)
• 'Man In The Middle' - B-side of 'SOS' in most territories
• 'Bang-A-Boomerang' - definitely a B-side in USA, not sure to which single ('I Do..'?)
• 'I Do I Do I Do I Do I Do' - could be the odd one out - haven't seen this as a B-side to anything (yet!)
• 'Rock Me' - B-side of 'I Do...' in most territories
• 'Intermezzo No. 1' - B-side of 'Mamma Mia' in several territories
• 'I've Been Waiting For You' - B-side of 'So Long' in most territories
• 'So Long' - B-side of 'I Do...' in the Netherlands (it was not an A-side there)