60 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Condition:
NewNew
ISBN-13: 9783662063385, 978-3662063385. "Nitrogen" SuppL. While" Nitrogen" SuppL. Hydrazine, N H, and its ions N2Ht and N2H~+ were not included. 2 4 (Reference is made to a voluminous monograph: [url] Schmidt, Hydrazine and its Deriva- tives: Preparation, Properties, Applications, Chichester 1984, 1088 pages.).