Judgment of the Court 29 January 2002 in Case C-162/00 (Reference for a preliminary ruling from the Bundesarbeitsgericht): Land Nordrhein-Westfalen v Beata Pokrzeptowicz-Meyer (External relations — Europe Agreement between the Communities and Poland — Interpretation of the first indent of Article 37(1) — Prohibition of discrimination based on nationality as regards conditions of employment or dismissal for Polish workers legally employed in a Member State — Fixed-term contract of employment of a foreign-language assistant — Effect on such a contract of the entry into force of the Europe Agreement)