Feature

Short-Cut to Figuring Path of New Comet

Botanist Helps Time Death

Joint Injections Relieve

Water-Injection Important in Recovering Additional Oil

Front Matter

Volume Information

Change Rules for Importing Parrots

Develop Single-Treatment Fungicide for Tomatoes

Short-Wave Radio Reception Disturbed One Third of Year

Exploding Phosphorus Atoms Tell Where to Put Fertilizer

Blood Difference in Sclerosis Clue to Cause

Greater Cold Risk If Children Are under 10