Abc of technical writing by zall?

It seems like you're asking about a book or resource called "Abc of Technical Writing" by an author named Zall. However, there isn't a widely known resource with that exact title and author.

It's possible that:

* The title or author name is slightly different: Perhaps there's a similar book with a slightly different name or author.

* It's a lesser-known resource: The book might be a self-published work or a regional publication that's not as widely accessible.

* You're remembering it incorrectly: It's possible you're recalling a book or resource incorrectly.

To help me find the resource you're looking for, could you provide more information? For example:

* Do you remember any other details about the book? (e.g., the publisher, the year it was published, any specific topics covered)

* Can you recall any other information about the author? (e.g., their full name, their profession)

With more information, I can hopefully help you track down the correct resource.