"print"@en . . . . . . . . . . . . "218"^^ . . . . . . . . "English"@en . . . "X Stands for Unknown"@en . . . . . "Fantasy & Science Fiction essays"@en . . . . . . . . "3176"^^ . . . . . "23691204"^^ . . "First edition"@en . . . "0"^^ . "'X' Stands for Unknown is a collection of seventeen nonfiction science essays written by Isaac Asimov. It was the seventeenth of a series of books collecting essays from The Magazine of Fantasy and Science Fiction, these being first published between January 1982 and May 1983. It was first published by Doubleday & Company in 1984."@en . "'X' Stands for Unknown"@en . . . . . . . . . . . . . "X comme inconnu"@fr . . . . "1984"^^ . . "United States"@en . . . . "'X' Stands for Unknown"@en . . . . "X comme inconnu (X Stands for Unknown) est un livre de vulgarisation scientifique d'Isaac Asimov \u00E9dit\u00E9 en 1984. Il explique diff\u00E9rents th\u00E8mes g\u00E9n\u00E9raux scientifiques tels qu'on pouvait les expliquer \u00E0 l'\u00E9poque."@fr . . . . "1094015217"^^ . . "0-385-18915-X" . "218"^^ . . . . . . . . "'X' Stands for Unknown is a collection of seventeen nonfiction science essays written by Isaac Asimov. It was the seventeenth of a series of books collecting essays from The Magazine of Fantasy and Science Fiction, these being first published between January 1982 and May 1983. It was first published by Doubleday & Company in 1984."@en . . . "X comme inconnu (X Stands for Unknown) est un livre de vulgarisation scientifique d'Isaac Asimov \u00E9dit\u00E9 en 1984. Il explique diff\u00E9rents th\u00E8mes g\u00E9n\u00E9raux scientifiques tels qu'on pouvait les expliquer \u00E0 l'\u00E9poque."@fr . .