One of the federal government's most prominent climate-change deniers has billed taxpayers for a series of books that argues global warming is a hoax.
MPs are allowed to buy publications including books, journals, magazines and newspapers as part of their taxpayer-funded allowances.
Queensland National MP George Christensen's latest expenses filed with the Finance Department show that he bought three books on climate-change denialism: The Greatest Hoax: How the Global Warming Conspiracy Threatens Your Future; Tower of Babble: How the United Nations Has Fuelled Global Chaos;and Taxing Air Australia.
He could not be reached for comment.
The books cost taxpayers $100.
Labor Waste Watch Committee chairman Pat Conroy attacked Mr Christensen's taste in books, saying, "George Christensen is clearly partial to fairytales, given he's stocked up on a raft of climate-change denialism fiction".
The list of MPs' expenses also shows L-plate minister Barnaby Joyce bought a book advising on how to be a successful minister, almost six months after entering cabinet as Agriculture Minister.
Mr Joyce bought Learning To Be a Minister (heroic expectations, practical realities) in March 2014.
Amazon's review says the book "investigates how a new ministry learns and adapts to the responsibilities of governing".
Mr Joyce revealed the book was so good he bought two copies. "It's a must read," he told Fairfax Media.
"There are two things in life that you don't need a degree for: one is having a baby and the other is becoming a minister, so any other information you can get on it should be absorbed with relish," he said.
"It's also handy for people in my office, especially electoral staff, learning about procedures," Mr Joyce said.
Mr Conroy said the rest of cabinet should follow Mr Joyce's example and buy a copy as "they obviously need some help".
Attorney-General George Brandis spent almost $1000 stocking his mega bookshelf, which has already cost taxpayers $15,000. He bought a book that sympathises with Julia Gillard and claims the first female prime minister was brought down by the media and Kevin Rudd.
Senator Brandis also charged taxpayers for the following publications: The War That Ended Peace: How Europe Abandoned Peace for the First World War 18, Rendezvous With Destiny: How Franklin D. Roosevelt and Five Extraordinary Men Took America Into the War and Into the World, a collection of David Malouf's essays, The Sleepwalkers: How Europe Went to War in 1914 17, and a Who's Who in Australia 2015, which alone cost $222.73.
The updated MPs' expenses also reveal Queensland Liberal MP Bert Van Manen bought four children's books, including Dr Seuss: A Classic History and Australian Animal Verses. He said he gave them to local schools and childcare centres in his electorate.