Melbourne, May 4 A book aimed at educating kids as young as two about how gay parents have children is being advertised in the bookstores Down Under.

It also teaches children about lesbian mums getting pregnant using sperm donors.

The controversial tome 'Where Did I Really Come From?' includes in-depth descriptions of sexual intercourse, suitable to be read to two-year-olds.

It is being advertised at some Sydney bookstores and inside the cover as being part of the NSW Attorney-General Office's Learn to Include program.

However, New South Wales Attorney-General John Hatzistergos has denied the link. "There is no connection between the Attorney-General's office and the book 'Where Did I Really Come From'," the Courier Mail quoted Hatzistergos, as saying.

"Nor is there any connection between the Attorney-General's Department and the book.

"The NSW Government has not funded or endorsed the book at any time. Any assertion to the contrary is incorrect," he added.

Infuriated family advocates claim that the book targets children too young.

"It devalues the traditional family unit and at the very least desensitises us," Focus On The Family spokeswoman Deb Sorensen said.

Meanwhile, author Narelle Wickham defended the book, describing it as a mainstream publication, which just went further about ways of conceiving children.

"It is just trying to normalise to children that there are many ways to conceive a child," she added. (ANI)