Who Goes Here? and The Giaconda Caper
From Author Wars - https://authorwars.com/books/who-goes-here-and-the-giaconda-caper-1778596.html
Editions/Publications:
- Unknown. Who Goes Here? and The Giaconda Caper (Unknown, Bob Shaw, VGSF, ISBN-10: 0575042591, £2.95, 253 pages, Paperback, Omnibus)