Each quarter of dough will make approximately twelve ravioli. From here on out, the steps will differ based on whether you're using a ravioli maker or working by hand (if you have a stamp, follow the by-hand directions as well).
Other than that, not much difference. I'd still recommend using Source when you want to play. HALF-LIFE: Source is the same game as the original HALF-LIFE but it's graphics and physic engine is improved with the Source engine that is used in the HALF-LIFE 2. It is an improved version with better quality. If you want a Source experience choose it, but if you want to remember the old days, buy the original game.
In marketing, half-life is a formula for estimating the total responses to be expected from a direct marketing campaign. The half-life of a catalog is the day when half of the consumer responses to the mailing have been received.