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1054 - Unknown column 'p.products_id' in 'on clause'

select p.products_fsk18, p.products_shippingtime, p.products_model, p.products_ean, pd.products_name, m.manufacturers_name, p.products_quantity, p.products_image, p.products_weight, pd.products_short_description, pd.products_description, p.products_id, p.manufacturers_id, p.products_price, p.products_discount_allowed, p.products_tax_class_id from products_description pd, products p left join manufacturers m on p.manufacturers_id = m.manufacturers_id, products_to_categories p2c left join specials s on p.products_id = s.products_id where p.products_status = '1' and p.products_id = p2c.products_id and pd.products_id = p2c.products_id and pd.language_id = '1' and p2c.categories_id = '20' ORDER BY p.products_price ASC

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