Who is the author of Variations?

The author of the book 'Variations'is Wong Kong-Yu. and this book published in 1940

What is the Publish date of Variations?

'Variations' was published in 1940.

The name of the publisher is 270.

Yes Offcourse this book have pdf version , not only its have many versionVariations.

You Can find this book Variations, at book.pdfforest and it's totally free, no need to pay.