H.R.H. The Prince Philip, Duke of Edinburgh, and James Fisher ; forewords by H.R.H. The Prince of the Netherlands and Peter Scott ; Epilogue by Stewart L. Udall. Published with the cooperation of the World Wildlife FundCowlesc1970
H.R.H. The Prince Philip, Duke of Edinburgh, and James Fisher ; forewords by H.R.H. The Prince of the Netherlands and Peter Scott ; epilogue by Stewart L. UdallHamish Hamiltonc1970