In dictionaries. grammars and other references mjesto/umjesto/namjesto is usually described as a preposition which governs the genitive case. Examples in which mjesto/umjesto/namjesto precede the nominals and pronominals with different case marking are either treated as adverbs. or they are not included into description at all. https://hollandscountryclothinges.shop/product-category/poultry-supplements/