I found this book because it has an introduction by Maria Kvilhaug (a title of herself I have yet to read). The author does not have a very Norse-sounding name and yet it did not ring a bell. This is even more strange, because the author seems to live not too far from where I live, just across the Belgian border.
The book is subtitled “an esoteric interpretation of Norse myth” and it is soon clear that this ‘esoteric leaning’ is a Theosophical one. This brings the book in line with The Masks of Odin and Between Wodan and Widar the latter being a more Anthroposophical (and better!) interpretation.
Initially Ongkowidjojo’s book appears to have the flaws of Titchenell’s, being too easy with his sources. He names Frigg a Vane for example and drops names that do not ring a bell and cannot even be found in Simek, even though this is one of the sources.
It is also obvious that the author knows his sources and has an eye for detail. Perhaps for forgets to double check sometimes.
Besides Theosophy there is also a thick layer of psychology in the book and the author uses magical sources such as the books of Aleister Crowley.