Mundo científico:La biodegradación de los hidrocarburos, la hormona del crecimiento, las plantas carnívoras, el virus de la hepatitis B Nº 54

Domestic shipments: The NORMAL shipment, for books whose weight is less than 1,000 gr. It is by ordinary mail without tracking code, in case of loss the bookshop is not responsible.
The PRIORITY shipment is by courier, has a code of
follow up and in case of loss the amount will be reimbursed by the bookstore.
International shipments: Check prices.
Books whose weight exceeds 1,000 gr. They will have additional shipping costs, except in the courier shipment.