Thanks for widening the perspective of this discussion AgX and Ian.
It's generally not realised just how different the European market and also approach to photography was back in the 1960's and 70's and it was only in the 90's that the global markets became more homogenous.
In Europe every major manufacturer made a developer similar to Rodinal, in fact Ilford's Certinal dates back to around 1907/8, Kodak's Kodinol (never made or sold in the US) came from research around the same time by Mees & Sheppard while at Wratten & Wainwright.
All the companies made High Definition Developers, Kodak HDD, Ilford Hyfin, Tetenal Neofy, Paterson Acutol S, Johsons Definol etc again uniquely European developers.
Europe was influenced by Willy Beutler and Hans Windisch, Windisch's book Die Neue Foto Schule (1938) also published in English as The New Photo School in the same year brought a more modern approach to image making and particularly the importance of development of smaller format negatives to achieve the best possible results. After the war Windish re-wrote his book as "The Manual of Modern Photography - The Technique" some of his developers were made & sold by Perutz.
So an American visiting a European photo-store in the 1960s would see many products not available in the US, (and that includes Kodak chemistry).
Ian
